United States

We will discuss the recent advances involving programmable, coherent manipulation of quantum systems based on neutral atom arrays excited into Rydberg states, allowing the control over several hundred qubits in two dimensions. Recent developments involving both analog and digital quantum simulations and quantum information processing will be described. In particular, the realization of novel quantum processing architecture based on dynamically reconfigurable entanglement and the steps towards quantum error correction will be discussed. Finally, we will discuss opportunities for optimizing these techniques towards realization of useful, large-scale quantum processors.

NSF Workshop on Software-Hardware Co-Design for Quantum Computing

Quantum processors based on reconfigurable atom arrays

The Institute of Physics and IOP Publishing, in partnership with the Chinese Physical Society (CPS) and the University of Science and Technology of China (USTC) are proud to have brought together the international quantum science community online for this inaugural conference.


Early career and leading researchers from universities, industry and government worldwide came together to share, learn and collaborate on the latest research and emerging areas of high interest across quantum science and technology. The broad themes covered by Quantum 2020 included:

Quantum communication;
Quantum computing and quantum simulation;
Quantum sensing, metrology and imaging;
Quantum information theory, software and algorithms;
Quantum foundations;
Quantum technology in industry.
The four-day event featured talks from world-renowned scientists, interactive poster sessions and two exciting panel discussions on the themes of Quantum Technology in Industry and Quantum Technology Programmes Around the World.


You will need to [register](https://www.iopconferences.org/iop/frontend/reg/tRegisterEmailNew.csp?pageID=978403&eventID=1552&tempPersonID=536224) to obtain a ticket. . If you have already registered you should have been sent an email from Underline (to the email address that you registered with) with the subject line ‘Welcome to Quantum 2020’. This email includes your ticket for the event. 

If you have a ticket and are experiencing problems in accessing the event, please contact us. 

Quantum 2020

The Institute of Physics and IOP Publishing, in partnership with the Chinese Physical Society (CPS) and the University of Science and Technology of China (USTC) are proud to have brought together the international quantum science community online for this inaugural conference.

Early career and leading researchers from universities, industry and government worldwide came together to share, learn and collaborate on the latest research and emerging areas of high interest across quantum science and technology. 

workshop paper


### WELCOME

#### NSF Workshop on software-hardware Co-Design for Quantum Computing

This workshop will function as a hub to spur a large, synergistic, and convergent effort for building a common technological ecosystem that quantum-enabled technologies and classical technologies can live together for mutual benefit and progress in the long term. In this workshop, experts from both industry and academia will gather together and discuss the key challenges that need to be addressed for an end-to-end quantum computing infrastructure. In particular, we advocate the importance of taking a computer engineering perspective. We envision that classic computer engineering techniques (at both software and hardware levels) have the potential to enable transformative scientific and industrial progress for quantum computing. The key is to figure out the grand challenges in the new quantum context. This workshop is to help the computer engineering community better understand and focus on these grand challenges rather than incremental changes, form a stronger collaboration, and propose transformative ideas to achieve significant progress in quantum computing. To this end, experts will be invited to get together to report the latest research progress and discuss their visions of the critical challenges that need to be addressed in the near future and how to tackle these challenges in a synergistic manner. <br><br>

Please **[click here](https://drive.google.com/file/d/1-Xy3sXjxNKaeph1QuUQD5YN_Ag3z3AQl/view?usp=sharing)** for more information.<br><br>


You can register for the workshop here.  Please use **[this link](https://nsfworkshop2022reg.paperform.co/)**.

This workshop will function as a hub to spur a large, synergistic, and convergent effort for building a common technological ecosystem that quantum-enabled technologies and classical technologies can live together for mutual benefit and progress in the long term.

Quantum Computer architecture design and optimization - panel discussion

Quantum error mitigation is a versatile set of tools for improving reliability of quantum circuits executed on a noisy hardware. It supplements more traditional approaches to quantum fault-tolerance based on error correcting codes. In this talk I discuss ideas how to reduce the overhead of error correction and improve scalability of error mitigation by combining the two approaches. First, I show how to integrate error mitigation into the surface code architecture to implement logical T-gates. As a result, logical Clifford+T circuits with the number of T-gates inversely proportional to the physical error rate can be implemented on small error-corrected devices without magic state distillation. Second, I discuss error mitigation based on Coherent Pauli Checks (CPC). This method can be viewed as a form of entanglement-assisted quantum error correction. CPCs are well suited for mitigating errors in Clifford+SU(2) circuits dominated by Clifford gates. I describe a simple theoretical model behind CPCs and report experimental demonstrations with up to 10 logical qubits and more than 100 logical CNOT gates.

Simulation of near-Clifford circuits on a noisy quantum hardware

This talk covers recent work estimating the resources needed for quantum advantage in several financial applications. These estimates indicate that error correction and mitigation will be critical. The second half of the talk reviews recent developments in error mitigation and tools for applying error mitigation such as the open source Mitiq compiler.

What do we need for quantum advantage in finance? Error mitigation & fault-tolerance

Approaches to fault tolerance and error mitigation on near-term systems and beyond - panel discussion

In recent years there has been a growing realization that simulation of physical systems is perhaps the killer application for quantum computers. Towards this end new techniques have been developed that aim to build a quantum simulation into a subspace of a larger quantum system. This block-encoding provides us with more flexibility than we would have with existing methods and allows quantum simulations to be performed at the limits of what physics permits for the speed of simulation. In this talk, I will discuss two recent results that use this formalism. The first uses block encodings to represent chemical dynamics within a larger unitary matrix allowing for sublinear scaling with the total number of electrons. The second approach shows that time itself can be block encoded in a quantum simulation allowing us to simulate the dynamics of time-dependent quantum systems as time-independent Hamiltonians. This will allow us to demonstrate the first truly optimal algorithm for simulating time dependent Hamiltonians (with linear time-dependence) and opens a path towards a broader understanding of how space and time dependence should be tackled within quantum simulations.

Quantum algorithms for simulation using block encodings

We give an overview of Microsoft's Azure Quantum cloud platform https://aka.ms/aq/ that allows users to develop in several quantum programming languages--including Q#, Qiskit, and Cirq--and to target several backends from a rapidly expanding ecosystem of hardware and software partners. The talk highlights also the Quantum Intermediate Representation (QIR) alliance, a joint effort that today consists of Microsoft, NVIDIA, Oak Ridge National Labs, Quantinuum, Quantum Circuits Inc., and Rigetti. The growing QIR Alliance aims at increasing interoperability between platforms, building of state-of-the-art compiler tools, and leveraging the unique capabilities of quantum computing that are distinct from the classical model.

Azure Quantum and the road to scalable quantum computing

Design automation and software for quantum computing - panel discussion

The invention of programmable quantum annealers was motivated in part by magnetism experiments on disordered Ising magnets---spin glasses. These experiments suggested that spin glasses could be brought into low-energy states faster by quantum annealing than by thermal annealing. Reproducing this phenomenon in a programmable quantum annealer has remained a central goal in the field. In this talk I will discuss a demonstration of this quantum critical speedup in a D-Wave Advantage processor, which is made possible by expanded qubit connectivity. I will then discuss a simple hybrid framework for extending the reach of quantum annealers to larger-than-chip optimization problems.

Quantum annealing: Coherent and hybrid approaches to spin glasses

Codesign for quantum sensors

For wireless network designers, user demand for increasing amounts of capacity continues to outpace supply, and while 5G has made progress, even higher-performance remains impractical in part because baseband algorithms are extremely computationally demanding: there is elasticity in the relationship between spectral efficiency and expended compute cycles. With a team of collaborators from industry and academia, this line of work aims to transform the current research landscape by leveraging quantum computation to overcome previous computational limitations, enabling new levels of wireless network performance, with the eventual outcome of incorporating quantum computation into tomorrow's Next Generation standards. We have implemented a series of such designs on quantum annealer and gate model computers: I will touch on a Large MIMO detector, an LDPC decoder, and work on a Polar code decoder. I will conclude with a roadmap for future progress in this area.

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