Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session P10: Quantum Computing: Industry SessionIndustrial Invited Live
|
Hide Abstracts |
Sponsoring Units: DQI Chair: Michelle Simmons, Silicon Quantum Computing |
Wednesday, March 17, 2021 3:00PM - 3:36PM Live |
P10.00001: Quantum supremacy using a programmable superconducting processor Invited Speaker: John Martinis The promise of quantum computers is that certain computational tasks might be executed exponentially faster on a quantum processor than on a classical processor. A fundamental challenge is to build a high-fidelity processor capable of running quantum algorithms in an exponentially large computational space. Here we report the use of a processor with programmable superconducting qubits to create quantum states on 53 qubits, corresponding to a computational state-space of dimension 2^53 (about 10^16). Measurements from repeated experiments sample the resulting probability distribution, which we verify using classical simulations. The Google Sycamore processor takes about 200 seconds to sample one instance of a quantum circuit a million times—our benchmarks currently indicate that the equivalent task for a state-of-the-art classical supercomputer would take approximately 10,000 years. This dramatic increase in speed compared to all known classical algorithms is an experimental realization of quantum supremacy for this specific computational task, heralding a much-anticipated computing paradigm. |
Wednesday, March 17, 2021 3:36PM - 4:12PM Live |
P10.00002: IonQ Quantum Computers: Clear to Scale Invited Speaker: Christopher Monroe A leading candidate for scalable quantum computers is based on individual atomic ion qubits, suspended and isolated with electric fields produced from electrodes etched on an ion trap chip, and individually addressed with laser beams. The qubits, represented by internal atomic energy levels, are not affected by the trapping forces, and confinement times can be indefinitely long. Because the qubit levels are excellent atomic clocks, their idle performance is essentially perfect, with indefinitely long T1 decay and T2 coherence times. In addition, trapped ion qubits are replicable to a level of accuracy much better than needed, and can thus be scaled without accumulating errors. External classical control fields, in the form of gated laser beams, allow reconfigurable all-to-all entangling quantum logic gate operations with up to about 100 qubits. Scaling to more than 1000 qubits can be accomplished by shuttling individual ions through a single chip. Scaling to arbitrarily large numbers of qubits, even up to 1,000,000 or more qubits will take the form of a modular photonic network, much like classical CPUs are fabricated today. This clearly defined roadmap does not require any breakthroughs in physics, but requires a serious effort in systems engineering and integrated optics. Perhaps the most attractive feature of this architecture is that there are no hardwires, as every quantum gate and connection is defined in software. At IonQ we are pursuing such a path to large-scale and useful quantum computers. We have built 5 systems, showing record performance in terms of meaningful circuit depth, and we have several more on the way in a clear engineering path to manufacturability. On the user side, IonQ has installed dedicated quantum computer systems to commercial cloud services, and we are also working directly with strategic customers to help co-design future IonQ systems to the native structure of particular quantum computer algorithms. |
Wednesday, March 17, 2021 4:12PM - 4:48PM Live |
P10.00003: High volume manufacturing of silicon spin qubits Invited Speaker: Thomas Watson High volume manufacturing in the semiconductor industry has enabled the integration of billions of transistors on a single chip and could be used to address the significant engineering challenges for the scale up of quantum computers. Here, we discuss how we are using the 300mm infrastructure at Intel to fabricate highly coherent (T2CPMG ~ 3ms) silicon spin qubits that are similar in size to transistors and that can be integrated with advanced CMOS technologies. In addition, we will show how we have developed new measurement infrastructure, such as the 300mm cryoprober, to provide much faster and statistically relevant feedback to the fab to accelerate device improvements. |
Wednesday, March 17, 2021 4:48PM - 5:24PM Live |
P10.00004: Majorana Qubits Invited Speaker: Leo Kouwenhoven Topological qubits are protected against decoherence from local noise sources which would provide important advantages for building stable qubits. We pursue the path of Majorana qubits based on nanoscale devices built from hybrid semiconductor-superconductor materials. The qubit states are formed by the parity of the occupation of pairs of Majorana zero modes. Quantum superpositions are created by braiding gates. We will present our scalable approach and the results on our path towards Majorana qubits. |
Wednesday, March 17, 2021 5:24PM - 6:00PM Live |
P10.00005: Silicon Photonic Quantum Computing Invited Speaker: Jeremy O'Brien PsiQuantum’s goal is to build the world’s first useful quantum computer using silicon photonic chips to process quantum information with single photons. A linear optical approach to quantum computing offers highly coherent qubits, high fidelity single qubit gates, and probabilistic entangling operations that can be implemented using well-known quantum optical methods. Architectures for fault tolerant quantum computing based on these operations can have very low optical depth and extremely high tolerance to optical loss. The key advantage of photonic quantum computing is the fact that the required photonic chips can be produced in conventional fabrication facilities used for commercial silicon photonics, allowing scaling to achieve large-scale error correction. We will discuss PsiQuantum’s approach to fault tolerant quantum computing. |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700