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Rigetti Computing Inc

Rigetti Computing Inc (RGTI)

10.94
1.99
(22.23%)
Cerrado 15 Enero 3:00PM
11.4801
0.5401
(4.94%)
Fuera de horario: 6:59PM

Discusiones en tiempo real e ideas comerciales: opere con confianza con nuestra poderosa plataforma.

Estadísticas y detalles clave

Último Precio
11.4801
Postura de Compra
11.48
Postura de Venta
11.49
Volume Operado de la Acción
390,265,971
9.73 Rango del Día 11.56
0.66 Rango de 52 semanas 21.42
Capitalización de Mercado [m]
Precio Anterior
8.95
Precio de Apertura
10.36
Última hora de negociación
Volumen financiero
US$ 4,183,590,328
Precio Promedio Ponderado
10.7198
Volumen promedio (3 m)
112,033,459
Acciones en circulación
192,295,809
Rendimiento del Dividendo
-
Ratio Precio/Utilidad
-27.93
Beneficio por acción (BPA)
-0.39
turnover
12.01M
Beneficio neto
-75.11M

Acerca de Rigetti Computing Inc

Rigetti Computing, Inc. is a full-stack quantum computing company. The Company has operated quantum computers and serves global enterprise, government, and research clients through its Rigetti Quantum Cloud Services platform. The Company's proprietary quantum-classical infrastructure provides high-p... Rigetti Computing, Inc. is a full-stack quantum computing company. The Company has operated quantum computers and serves global enterprise, government, and research clients through its Rigetti Quantum Cloud Services platform. The Company's proprietary quantum-classical infrastructure provides high-performance integration with public and private clouds for practical quantum computing. It has developed a multi-chip quantum processor for scalable quantum computing systems. Through the Company's Quantum Computing as a Service (QCaaS) platform, its machines can be integrated into any public, private, or hybrid cloud. The Company offers product types of platform, research and software tool usage in the application areas of benchmarking, chemical simulation, education/entertainment, machine learning, and optimization. The Company designs and manufactures its chips in-house at Fab-1, an integrated quantum device manufacturing facility. Mostrar más

Sector
Blank Checks
Industria
Blank Checks
Sitio web
Sede
Wilmington, Delaware, USA
Fundado
-
Rigetti Computing Inc is listed in the Blank Checks sector of the NASDAQ with ticker RGTI. The last closing price for Rigetti Computing was US$8.95. Over the last year, Rigetti Computing shares have traded in a share price range of US$ 0.66 to US$ 21.42.

Rigetti Computing currently has 192,295,809 shares in issue. The market capitalisation of Rigetti Computing is US$1.72 billion. Rigetti Computing has a price to earnings ratio (PE ratio) of -27.93.

Flujo de Opciones Rigetti Computing (RGTI)

Flujo General

Optimista

Prima Neta

43M

Calls / Puts

494.38%

Comp. / Vent.

137.37%

OTM / ITM

33.33%

Sweeps Ratio

1.13%

RGTI Últimas noticias

Rigetti Computing to Participate in Fireside Chat at 27th Annual Needham Growth Conference

BERKELEY, Calif., Jan. 10, 2025 (GLOBE NEWSWIRE) -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, announced today that...

Rigetti Computing Launches 84-Qubit Ankaa™-3 System; Achieves 99.5% Median Two-Qubit Gate Fidelity Milestone

Ankaa-3 features a broad hardware redesign enabling superior performance. Enhancements across the technology stack include a new cryogenic hardware design, an overhaul of the qubit circuit layout...

Defiance Quantum Computing ETF (QTUM) Surpasses $400 Million. $QTUM YTD Performance 40%+

MIAMI, Dec. 13, 2024 (GLOBE NEWSWIRE) -- Defiance ETFs is thrilled to announce that QTUM - Defiance Quantum Computing ETF has reached a major milestone, surpassing $400 million in assets under...

Quantum Machines and Rigetti Announce Successful AI-Powered Calibration of a Quantum Computer

TEL AVIV, Israel and BERKELEY, Calif., Dec. 10, 2024 (GLOBE NEWSWIRE) -- Quantum Machines, the leading provider of processor-based quantum controllers and Rigetti Computing (Nasdaq: RGTI), a...

Rigetti Computing Announces Pricing of $100 Million Registered Direct Offering of Common Stock Priced At-The-Market Under Nasdaq Rules

BERKELEY, Calif., Nov. 26, 2024 (GLOBE NEWSWIRE) -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that...

Rigetti Announces Successful Completion of $100 Million At-the-Market Equity Offering

BERKELEY, Calif., Nov. 25, 2024 (GLOBE NEWSWIRE) -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that...

Rigetti to Present Keynote at SEMICON Europa 2024

BERKELEY, Calif., Nov. 13, 2024 (GLOBE NEWSWIRE) -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that...

Rigetti Computing Reports Third Quarter 2024 Financial Results and Business Updates

BERKELEY, Calif., Nov. 12, 2024 (GLOBE NEWSWIRE) -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its...

Rigetti and Riverlane Progress Towards Fault Tolerant Quantum Computing with Real-Time and Low Latency Error Correction on Rigetti QPU

BERKELEY, Calif., Oct. 31, 2024 (GLOBE NEWSWIRE) -- Rigetti (Nasdaq: RGTI), a pioneer in full-stack quantum-classical computing, announced the successful demonstration of real-time and low...

Fully Operational Rigetti QPU Included in UK’s Recently Opened National Quantum Computer Centre

The UK’s National Quantum Computing Centre (NQCC) officially opened the doors of its landmark facility on Harwell Campus on October 25. The state-of-the-art facility includes a fully operational...

Período †Variación(Ptos)Variación %AperturaPrecio MáximoPrecio MínimoAvg. Vol. diarioPrecio Promedio Ponderado
1-1.1699-9.2482213438712.6512.90995.952561757368.73224538CS
40.35013.1455525606511.1321.425.9520110242912.69267456CS
1210.2901864.7142857141.1921.421.061120334599.08777066CS
2610.3901953.2201834861.0921.420.66520368898.75167281CS
5210.46011025.51.0221.420.66294000378.03737046CS
1561.730117.74461538469.7521.420.3601117757517.21576464CS
2601.730117.74461538469.7521.420.3601117757517.21576464CS

RGTI - Preguntas Frecuentes

¿Cuál es el precio actual de las acciones de Rigetti Computing?
El precio actual de las acciones de Rigetti Computing es US$ 11.4801
¿Cuántas acciones de Rigetti Computing están en circulación?
Rigetti Computing tiene 192,295,809 acciones en circulación
¿Cuál es la capitalización de mercado de Rigetti Computing?
La capitalización de mercado de Rigetti Computing es USD 1.72B
¿Cuál es el rango de negociación de 1 año para el precio de las acciones de Rigetti Computing?
Rigetti Computing ha negociado en un rango de US$ 0.66 a US$ 21.42 durante el último año
¿Cuál es el ratio PE (precio/beneficio) de Rigetti Computing?
El ratio precio/beneficio de Rigetti Computing es -27.93
¿Cuál es el ratio de efectivo a ventas de Rigetti Computing?
El ratio de efectivo a ventas de Rigetti Computing es 174.84
¿Cuál es la moneda de reporte de Rigetti Computing?
Rigetti Computing presenta sus resultados financieros en USD
¿Cuál es el último ingresos anual de Rigetti Computing?
El último ingresos anual de Rigetti Computing es USD 12.01M
¿Cuál es el último beneficio anual de Rigetti Computing?
El último beneficio anual de Rigetti Computing es USD -75.11M
¿Cuál es la dirección registrada de Rigetti Computing?
La dirección registrada de Rigetti Computing es 108 W. 13TH STREET, SUITE 100, WILMINGTON, DELAWARE, 19801
¿Cuál es la dirección del sitio web de Rigetti Computing?
La dirección del sitio web de Rigetti Computing es www.rigetti.com
¿En qué sector industrial opera Rigetti Computing?
Rigetti Computing opera en el sector BLANK CHECKS

Movimientos

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RGTI Discussion

Ver más
nsomniyak nsomniyak 2 horas hace
Calm down, sparky!

There is no point in suing him. There is no case.

He simply made a statement aligned with his own self-interest. He was not trying to deceive anyone - he doesn't need to.
👍️0
Stks_Not_Toys Stks_Not_Toys 8 horas hace
Tomorrow's conference should set things buzzing or silent.
👍️0
rbl100 rbl100 9 horas hace
Could be a dead cat bounce right now. I don't trust the people who hype these stocks. They can sell all at once at anytime and drop the price into the basement like it was just a couple weeks back. Fundamentals are just not there. Period. Hype is dangerous to play with....
👍️ 1
JPetroInc JPetroInc 14 horas hace
Mui bueno amigo…

stunning recovery - RGTI has an exceptional future

AJMHO
👍️0
wiredawg wiredawg 14 horas hace
Will be available for viewing for the next 6 months (180 days). Just in fill (company, I said "none") and it will let you view to conference.

https://wsw.com/webcast/needham143/register.aspx?conf=needham143&page=rigg&url=https://wsw.com/webcast/needham143/rigg/2240282
👍️0
tw0122 tw0122 14 horas hace
Flip out $10.41 most and wait for a dip hopefully if not let remaining run
👍️0
uksausage uksausage 15 horas hace
one thing Jensen has done is catapult any mention of Quantum into the limelight.
got to be good for all stocks for the next few months until the dust settles on capabilities and financial needs.

At least Microsoft has quantum business (with Azure hosting a number of systems) not sure why Zuckerberg was talking about Quantum besides Meta having no activity….
👍️ 1
BIOCHEMUP BIOCHEMUP 16 horas hace
Any thoughts on this?
https://www.barrons.com/articles/microsoft-quantum-computing-stocks-0a3085fb

👍️0
tw0122 tw0122 16 horas hace
RGTI $11 up next .. quantum comments from Zuckerberg a reminder of GooG MSFT META NVDA years ago. Market looks forward not backwards 
👍 1 💯 1
JPetroInc JPetroInc 17 horas hace
nice day yesterday...

any idea where to get a copy or sound bite of yesterdays Fireside Chat at 27th Annual Needham Growth Conference?

OEM
👍 1
aBeezlee aBeezlee 20 horas hace
This is a highly speculative field. Rigetti may not match top companies in benchmarks, but that doesn't mean they can't cut out their own piece of the pie. I have no idea when they'll be profitable or show significant revenue, but we can't pretend to know the future.

I'm going to keep it on my list and follow the story, along with the other quantum/post-quan companies.
👍️0
aBeezlee aBeezlee 1 día hace
Haha. I ended up adding to the other quantum stocks I have, and some non quantum positions. This is a sector I intend to put more money going forward despite the volatility.
👍 1
I-Glow I-Glow 1 día hace
RGTI is on the Nasdaq Capital Market - the lowest tier where you can find Mullen Automotive.

Major players like Google, IBM, and Microsoft have invested billions over decades in research and Development.
Demis Hassabis, the CEO of Google DeepMind, announced the $100 billion budget at a TED conference in Vancouver in April 2024.
Of that approximately $10 Billion is spent on Quantum Computing.

In the Last 10-Q the company stated - "With the goal of unlocking this opportunity, we have developed the world’s first multi-chip quantum processor for scalable quantum computing systems. We believe that this patented and patent pending, modular chip architecture is the building block for new generations of quantum processors that we expect to achieve a clear advantage over classical computers."

I read the patents and they don't seem to have any commercial value - also 95-97% of ALL patents fail to be licensed or commercialized.

Google's Willow is already outclassing Supercomputers -"As of November 2024, El Capitan at Lawrence Livermore National Laboratory (LLNL) is the world's fastest supercomputer.
Speed: El Capitan has a peak performance of 2.79 exaFLOPs, which is 2.79 quintillion calculations per second.

Google's quantum computer chip, Willow, is extremely fast, performing calculations in minutes that would take today's fastest supercomputers billions of years.

RGTI needs Billions in Capital to compete in the Quantum Computing sector.

There are far too many hurdles to overcome for startups to compete.
With 1,978 Quantum Computing related patents published between 2002 and 2022, International Business Machines Corp holds the most number of Quantum Computing patents in the global Technology, Media and Telecom sector.

The second largest number of Quantum Computing related patents were published by Alphabet Inc with 944 patents, of which 95.6% was contributed by its subsidiary Google LLC.
IG
👍️ 1
aBeezlee aBeezlee 1 día hace
It's not that I believe, it's simply what happened. Quan is a threat to these companies, since they haven't made much progress yet. I hold multiple players (LAES, DWAVE, QeM, etc). Quantum is a big part of my port along with space stocks. It's true the tech is young, but buying AFTER they mature would be insane.

This is like buying Amazon at dollars before they blew up. I'm not going to wait till 2040 to start investing in this tech. That's why I do it now.
👍️0
Moonboy1 Moonboy1 1 día hace
Howd that work out for you?
👍️0
Moonboy1 Moonboy1 1 día hace
Do you believe these liars? Follow the money. Quantum is their competition. I knew day one it was a lie and the CEO of NVDA should be sued for lying to the public to manipulate the stock prices of quantum stocks.
👍️ 1
wiredawg wiredawg 1 día hace
That's a bit overly optimistic, but I'll take it. But then again "before we know it" can be any amount of timeline.

GLTY/A
👍️0
luckydude777 luckydude777 1 día hace
Get 'em while they're cheap, laddies. Will be over $100 before we know it.
👍️ 1
JPetroInc JPetroInc 1 día hace
nice rebound action today - solid…!

OEM
👍️0
AlwaysOptimistic AlwaysOptimistic 1 día hace

Quantum computing stocks rebound after massive sell-off as industry exec says opportunity is 'real'

https://finance.yahoo.com/news/quantum-computing-stocks-rebound-after-massive-sell-off-as-industry-exec-says-opportunity-is-real-175835656.html

CEO Alan Baratz refuted the idea that practical uses of the technology are far out and made a dig at Nvidia.

"“We have customers that are using our quantum computers today in support of their business operations, and we have demonstrated the ability to solve important problems in the area of material simulation on our quantum computers today in minutes," he said. "That it would take well over millions of years to solve on classical computers, including massively parallel GPU systems like what Nvidia builds.”"
👍️0
Monksdream Monksdream 1 día hace
RGTI, finding support
👍️0
Monksdream Monksdream 1 día hace
RGTI one year chart
👍️0
AlwaysOptimistic AlwaysOptimistic 2 días hace
This is Why IonQ and Other Quantum Computing Stocks Will Recover

https://moneymorning.com/2025/01/10/this-is-why-ionq-and-other-quantum-computing-stocks-will-recover/

https://moneymorning.com/2025/01/13/rigetti-computing-stock-under-pressure-is-a-bounce-likely-at-this-support-level/

* Please do your own due diligence and make your own investment decisions.
👍 1 💯 1
aBeezlee aBeezlee 2 días hace
Did you not see the news? Two prominent CEOs claim quantum won't be useful for a long time in essence. Not good to say to public.
👍️ 1
double_m double_m 2 días hace
Sentiment on quantum stocks is mixed across the market. This week will give a clear idea of where they are going to end up. Might be prudent to sit on the sidelines.

https://www.yahoo.com/finance/news/why-nvidias-quantum-outlook-crushed-010000773.html
👍️0
Moonboy1 Moonboy1 2 días hace
Down more than 75% from its high in a week. Crazy.
👍️ 1
aBeezlee aBeezlee 2 días hace
Going to sit out and see how low it goes then. Wondering why the CEO isn't speaking out...

Unfortunately people I know bought calls around $19. Not sure they can recover.
👍️0
aBeezlee aBeezlee 2 días hace
I hope you two are correct about $1 and below. Waiting for the dip.
👍️0
rbl100 rbl100 2 días hace
That's where it was before the pump. I almost fell for it, but so glad I had discipline. Man I would have been phucked.
👍️ 1
double_m double_m 2 días hace
Between last week and today, < $1 may not be that far a stretch. EOW should be interesting.
👍️ 1
aBeezlee aBeezlee 2 días hace
Under $1 would be amazing! Not sure if possible.
👍️0
rbl100 rbl100 2 días hace
Dropping way faster than I expected. Wow, that did not take long. This could hit subdollar in weeks not months.
👍️0
DL11 DL11 3 días hace
Here comes the 50 day MA test. Can't rule out test of 200 day MA of $2.38 sometime in the next 3 months.
👍️0
rbl100 rbl100 3 días hace
That's awesome. Too bad people are stuck in this. Looks to be heading back to fair value around $0.70 again.
👍️ 1
Dieselsmoke Dieselsmoke 4 días hace
Let her fly
👍 1
Stks_Not_Toys Stks_Not_Toys 4 días hace
I'm staying in.
👍️ 1 💯 1
wiredawg wiredawg 4 días hace
Something to chew on over the weekend: Quantum Machines, Rigetti Computing, and Nvidia announced today the successful application of AI to automate the calibration of a quantum computer. With their AI-powered tools, Quantum Elements and Qruise, remotely automated the calibration of a 9-qubit Rigetti quantum processing unit (QPU) integrated with Quantum Machines’ advanced control system and Nvidia DGX Quantum. A unified system for quantum-classical computing that Nvidia built with Quantum Machines, it is hosted at the Israeli Quantum Computing Center (IQCC).

https://x.com/NVIDIADC/status/1866574377732673641
https://www.forbes.com/sites/gilpress/2024/12/10/nvidia-rigetti-quantum-machines-deliver-ai-powered-quantum-computing/
💯 1
copytele copytele 5 días hace
There is a few, but these will do for now;
"In times like these, it helps to remember that there has always been times like these" "Good day" -- Paul Harvey

“If you've been playing poker for half an hour and you still don't know who the patsy is, you're the patsy.” -- Warren Buffet GAVE YOU A "FOLLOW" , MAYBE YOU COULD DO THE SAME ?
👍️0
copytele copytele 5 días hace
Nice info. , thanks >>>> gave you # 87 , hit me back buddy.
👍️0
ecmoney ecmoney 5 días hace
Picked up a few thousand at $7.97
After hours
Hopefully I did good

Ec
👍️ 1 💯 1
aBeezlee aBeezlee 5 días hace
I got out earlier. Holding cash until I figure out what to do Monday.
👍️0
wiredawg wiredawg 5 días hace
Hopfully, they will have something to good to say:

https://investors.rigetti.com/news-releases/news-release-details/rigetti-computing-participate-fireside-chat-27th-annual-needham
👍️0
harr449 harr449 5 días hace
IONQ & RGTI Article

https://www.tipranks.com/news/ionq-and-rigetti-top-analyst-chooses-the-best-quantum-computing-stocks-to-buy
👍️0
rbl100 rbl100 5 días hace
You are brave I must say. GL
👍️0
aBeezlee aBeezlee 5 días hace
Bought around 9.4, sold over 10. Not a bad trade. Waiting to see if 4-5 returns.
👍️0
rbl100 rbl100 5 días hace
Falling knife and so glad I avoided the hype. Done with gambling. Sorry for those who are bagholders. Been there done that.
👍️0
jbsliverer jbsliverer 5 días hace
2:26 PM EST, January 10, 2025 (Benzinga Newswire)

While hailed as a tech genius, Nvidia Corp. (NASDAQ:NVDA) CEO Jensen Huang isn't exactly making friends among key players in the quantum computing field. During the semiconductor giant's analyst day, Huang warned that quantum computers' practical applications might be 15 to 30 years away.
In response, sector-related securities fell sharply.
Naturally, executives working in the arena quickly rebutted Huang, noting that the tech ecosystem already incorporates quantum-based innovations. To be sure, the retail investment community appears to agree with the bullish perspective, with several quantum computing stocks witnessing stratospheric growth over the past several weeks.
As such, investors may be tempted to buy the dip, interpreting the recent fallout as a speed bump against a long-term narrative. Still, it's good to take an objective view of the data before making a decision.

Rigetti Computing Inc
Over the last six months, Rigetti Computing Inc's (NASDAQ:RGTI) performance has been simply astonishing, gaining almost 830%. However, it received a rude awakening thanks to Huang's commentary. As of this writing, it's on pace to lose about 42% of market value relative to Monday's opening price of $18.54.



Historically, the worst weekly loss that RGTI stock suffered is 37.47%, which occurred in June 2022. What's interesting, though, is that investors generally avoid extreme dips in RGTI, defined as weekly losses of 20% or worse. Of the 11 such instances posted since April 2021, only five times (45.45%) did Rigetti rebound four weeks later.
During the six times when RGTI stock tumbled a month out, the average loss came out to 20.33%. Therefore, a statistical risk exists that for the options chain expiring Feb. 7 (four weeks from today), shares may fall to $8.56. Aggressive speculators may consider the 11.50/8.50 bear put spread in anticipation that RGTI may fall to the short put strike price of $8.50.

D-Wave Quantum
Another high-flying name among quantum computing stocks, D-Wave Quantum (NYSE:QBTS) saw its shares rise 400% in the trailing half-year period. However, it too got cold water splashed on its face. At time of writing, D-Wave Quantum stock trades at $6.52, down nearly 29% from Monday's opening price of $9.17.



Statistically, whenever D-Wave Quantum loses between 20% to 30% of value in a week, there's a 66.67% chance that a month later, the security could be in the red. Further, the average loss comes out to 34.15%.
Notably, when D-Wave Quantum suffers a 30% weekly loss or worse, the odds of downside four weeks out rises to 75%, with an average loss of 25.2%.
Realistically, then, D-Wave stock risks declining to $4.89 by Feb. 7. One aggressive idea to consider is the 7/5 bear put spread, which anticipates that D-Wave Quantum stock will fall to the key technical support line of $5.

IonQ Inc
One of the most popular quantum computing stocks, IonQ (NYSE:IONQ) managed to pop 260% since early July of last year. However, it also suffered terribly due to the high-level criticism of the sector. Currently, shares trade hands at $34.12, down 29.36% from Monday's opening price of $48.30.



Dubiously, IonQ is on pace to post a record. Since its January 2021 debut, IonQ stock's worst weekly performance was a loss of 24.88%, incurred in November 2021. What's even more problematic, there have only been three instances when shares dropped 20% or more in one week. In the subsequent four weeks, there have been no instances when IonQ posted a positive return.
That's not to say that the quantum computing specialist can't make a comeback from the current malaise. Indeed, the average loss four weeks out lands at only 7.62%, indicative of an extreme tug-of-war. Still, the numbers at the moment don't favor bullish speculation.
Therefore, aggressive traders may consider the 32/30 bear put spread expiring Feb. 7, anticipating that the pessimists will drive shares down to the psychologically significant $30 level.

Quantum Computing
Finally, no one can touch Quantum Computing (NASDAQ:QUBT) in terms of outright performance in the sector.
In the past six months, Quantum Computing gained almost 1,639%, a beneficiary of an explosive catalyst meeting an ultra-small share price. However, it's currently trading at $11.03, thus on pace for a severe decline of 36.24% relative to Monday's opening price of $17.30.



Historically, Quantum Computing stock is no stranger to extreme volatility. Since January 2020, its worst weekly loss was 40.74%, posted in February 2023. That said, in overall terms, investors tend to appreciate bouts of red ink as buying opportunities. There have been 15 instances when Quantum Computing lost 20% or more in a one-week period. Four weeks later, shares returned a positive figure nine times or 60%.
The average positive return clocks in at 48.8%, implying an upside price target of $16.41. Statistically, then, investors who want to buy the dip may consider doing so for Quantum Computing stock.
For the options chain expiring Feb. 7, aggressive traders may target the 12/16 bull call spread.


.
👍 1
jbsliverer jbsliverer 5 días hace
Still many, many years away. Makes for great trading though. FOMO max, puts galore, profits taken. Pretty much FOMO gone now, it will be hard for it come back at least in short/medium term. Attention changed to fundamentals or other stocks, needs to make profit to become solid investment. It will be only speclutive and short term action, still getting pretty good volume and volitility for a little trading, so there's that.


Record-Breaking Quantum Refrigerator May Enable Reliable Quantum Computers
https://refindustry.com/news/market-news/record-breaking-quantum-refrigerator-may-enable-reliable-quantum-computers/
Date: 10 January 2025


A new quantum refrigerator – represented by the square chip in the middle of a copper casing – relies on superconducting circuits and is powered by ambient heat. The illustration shows how the refrigerator leverages interactions between quantum bits, specifically between the target qubit and two auxiliary qubits used for cooling. It operates using energy flows driven by temperature differences between the quantum systems.

Quantum computers require extremely low temperatures to perform reliable calculations. One of the key challenges in advancing quantum computing is the difficulty of cooling components to temperatures close to absolute zero. Researchers from Chalmers University of Technology and the University of Maryland have now developed a minimal, self-governing refrigerator capable of cooling superconducting quantum bits (qubits) to record-low temperatures, paving the way for more reliable quantum computations.

Quantum Computing Challenges
Quantum computers have the potential to revolutionize fundamental technologies across various sectors, including medicine, energy, cryptography, artificial intelligence, and logistics. Unlike classical computers, where bits are either 1 or 0, quantum computers use qubits, which can exist in a superposition of both states simultaneously. This property enables quantum computers to perform parallel computations with immense processing potential. However, their operation is currently limited by the need to correct significant amounts of errors, which restricts the computing time of quantum systems.

Autonomous Quantum Cooling
According to Aamir Ali, a quantum technology researcher at Chalmers and lead author of a recent paper in Nature Physics, qubits are highly sensitive to environmental disturbances. “Weak electromagnetic waves leaking into the computer can randomly change the value of a qubit, causing errors that halt quantum calculations,” says Ali.

Quantum computers built with superconducting circuits can conduct electricity without resistance and efficiently store information. However, to function reliably over extended periods, qubits must be cooled to near absolute zero (-273.15°C). Current cryostats, which envelop quantum computers and use helium for cooling, can lower temperatures to approximately -273.1°C. Absolute zero is physically unattainable, but the new quantum refrigerator can complement existing cryostats by cooling systems several hundredths of a degree further, reaching record-low temperatures for superconducting qubits.

“The quantum refrigerator is based on superconducting circuits and powered by ambient heat, making it autonomous. It can cool qubits to approximately -273.13°C. This breakthrough paves the way for more reliable and error-free quantum computations while reducing the strain on hardware,” says Aamir Ali.
Surprising Performance
The quantum refrigerator utilizes interactions between qubits – specifically, between the qubit being cooled and two auxiliary qubits dedicated to the cooling process. It operates autonomously, relying on energy flows driven by temperature differences within the quantum systems. Once activated, the system functions without external intervention.

“Our work is undoubtedly the first demonstration of an autonomous quantum thermal machine performing a practically useful task. Initially, this experiment was intended as a proof of concept, so we were pleasantly surprised when the quantum refrigerator achieved unparalleled performance and succeeded in cooling the qubit to record-low temperatures,” says Simone Gasparinetti, Associate Professor at Chalmers and research leader for the study.
Details of the Research
The study, titled Thermally driven quantum refrigerator autonomously resets superconducting qubit, was published in Nature Physics. The compact quantum refrigerator, which fits on a small chip, was manufactured at Chalmers’ nanofabrication lab, Myfab.

The research team includes Mohammed Ali Aamir, Simone Gasparinetti, Claudia Castillo-Moreno, and Paul Jamet Suria from the Department of Microtechnology and Nanoscience at Chalmers, as well as Nicole Yunger Halpern, José Antonio Marín Guzman, and Jeffrey M. Epstein from the Joint Center for Quantum Information and Computer Science (NIST), the University of Maryland, and the Institute for Physical Science and Technology at the University of Maryland, USA.

The research was supported by the Swedish Research Council, the Knut and Alice Wallenberg Foundation through the Wallenberg Center for Quantum Technology (WACQT), the EU’s Quantum Flagship project ASPECTS, ERC ESQuAT, the National Science Foundation, and the John Templeton Foundation.


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