Publications (34)
Local arrows of time in quantum many-body systems
Andrew G. Yates, Jordan Cotler, Nishad Maskara +1
We demonstrate that in quantum many-body systems, local arrows of time can differ from the global time induced by Hamiltonian evolution. That is, within a quantum many-body sys…
Fast correlated decoding of transversal logical algorithms
Madelyn Cain, Dolev Bluvstein, Chen Zhao +7
Quantum error correction (QEC) is required for large-scale computation, but incurs a significant resource overhead. Recent advances have shown that by jointly decoding logical qubi…
Circumventing superexponential runtimes for hard instances of quantum adiabatic optimization
Benjamin F. Schiffer, Dominik S. Wild, Nishad Maskara +3
Classical optimization problems can be solved by adiabatically preparing the ground state of a quantum Hamiltonian that encodes the problem. The performance of this approach is det…
High-fidelity entangling gates and nonlocal circuits with neutral atoms
Simon J. Evered, Muqing Xu, Sophie H. Li +9
Creation and manipulation of entanglement with low error is essential in quantum information systems. In practice, two-qubit entangling gates constitute a dominant error source, li…
Logical quantum processor based on reconfigurable atom arrays
Dolev Bluvstein, Simon J. Evered, Alexandra A. Geim +18
Suppressing errors is the central challenge for useful quantum computing, requiring quantum error correction for large-scale processing. However, the overhead in the realization of…
High-fidelity parallel entangling gates on a neutral atom quantum computer
Simon J. Evered, Dolev Bluvstein, Marcin Kalinowski +12
The ability to perform entangling quantum operations with low error rates in a scalable fashion is a central element of useful quantum information processing. Neutral atom arrays h…
Complexity phase diagram for interacting and long-range bosonic Hamiltonians
Nishad Maskara, Abhinav Deshpande, Adam Ehrenberg +3
We classify phases of a bosonic lattice model based on the computational complexity of classically simulating the system. We show that the system transitions from being classically…
Probing the Kitaev honeycomb model on a neutral-atom quantum computer
Simon J. Evered, Marcin Kalinowski, Alexandra A. Geim +15
Quantum simulations of many-body systems are among the most promising applications of quantum computers. In particular, models based on strongly-correlated fermions are central to…
Fermionic quantum processing with programmable neutral atom arrays
Daniel González-Cuadra, Dolev Bluvstein, Marcin Kalinowski +10
Simulating the properties of many-body fermionic systems is an outstanding computational challenge relevant to material science, quantum chemistry, and particle physics. Although q…
Architectural mechanisms of a universal fault-tolerant quantum computer
Dolev Bluvstein, Alexandra A. Geim, Sophie H. Li +20
Quantum error correction (QEC) is believed to be essential for the realization of large-scale quantum computers. However, due to the complexity of operating on the encoded `logical…
Enhancing Detection of Topological Order by Local Error Correction
Iris Cong, Nishad Maskara, Minh C. Tran +5
The exploration of topologically-ordered states of matter is a long-standing goal at the interface of several subfields of the physical sciences. Such states feature intriguing phy…
Discrete time-crystalline order enabled by quantum many-body scars: entanglement steering via periodic driving
Nishad Maskara, Alexios A Michailidis, Wen Wei Ho +4
The control of many-body quantum dynamics in complex systems is a key challenge in the quest to reliably produce and manipulate large-scale quantum entangled states. Recently, quen…
Floquet engineering of interactions and entanglement in periodically driven Rydberg chains
Nazlı UÄur KöylüoÄlu, Nishad Maskara, Johannes Feldmeier +1
Neutral atom arrays driven into Rydberg states constitute a promising approach for realizing programmable quantum systems. Enabled by strong interactions associated with Rydberg bl…
Towards Ultra-High-Rate Quantum Error Correction with Reconfigurable Atom Arrays
Chen Zhao, Casey Duckering, Andi Gu +2
Quantum error correction is widely believed to be essential for large-scale quantum computation, but the required qubit overhead remains a central challenge. Quantum low-density pa…
Controlling local thermalization dynamics in a Floquet-engineered dipolar ensemble
Leigh S. Martin, Hengyun Zhou, Nathaniel T. Leitao +9
Understanding the microscopic mechanisms of thermalization in closed quantum systems is among the key challenges in modern quantum many-body physics. We demonstrate a method to pro…
Walking through Hilbert Space with Quantum Computers
Tong Jiang, Jinghong Zhang, Moritz K. A. Baumgarten +6
Computations of chemical systems' equilibrium properties and non-equilibrium dynamics have been suspected of being a "killer app" for quantum computers. This review highlights the…
A learning algorithm with emergent scaling behavior for classifying phase transitions
Nishad Maskara, Michael Buchhold, Manuel Endres +1
Machine learning-inspired techniques have emerged as a new paradigm for analysis of phase transitions in quantum matter. In this work, we introduce a supervised learning algorithm…
Quantum coarsening and collective dynamics on a programmable simulator
Tom Manovitz, Sophie H. Li, Sepehr Ebadi +15
Understanding the collective quantum dynamics of nonequilibrium many-body systems is an outstanding challenge in quantum science. In particular, dynamics driven by quantum fluctuat…
Fast and Parallel High-Rate STAR Architecture for Megaquop Quantum Simulation
Refaat Ismail, Milan KornjaÄa, Hong-Ye Hu +4
Fault-tolerant quantum simulation is approaching a phase where encoding overhead, logical Clifford operations, magic-state preparation, and rotation synthesis must be optimized tog…
Enhancing Quantum Memory Lifetime with Measurement-Free Local Error Correction and Reinforcement Learning
Mincheol Park, Nishad Maskara, Marcin Kalinowski +1
Reliable quantum computation requires systematic identification and correction of errors that occur and accumulate in quantum hardware. To diagnose and correct such errors, standar…
Quantum simulation of dynamical gauge theories in periodically driven Rydberg atom arrays
Johannes Feldmeier, Nishad Maskara, Nazlı UÄur KöylüoÄlu +1
Simulating quantum dynamics of lattice gauge theories (LGTs) is an exciting frontier in quantum science. Programmable quantum simulators based on neutral atom arrays are a promisin…
Non-Abelian Floquet Spin Liquids in a Digital Rydberg Simulator
Marcin Kalinowski, Nishad Maskara, Mikhail D. Lukin
Understanding topological matter is an outstanding challenge across several disciplines of physical science. Programmable quantum simulators have emerged as a powerful approach to…
Batched high-rate logical operations for quantum LDPC codes
Qian Xu, Hengyun Zhou, Dolev Bluvstein +5
High-rate quantum LDPC (qLDPC) codes reduce memory overhead by densely packing many logical qubits into a single block of physical qubits. Here we extend this concept to high-rate…
Programmable Simulations of Molecules and Materials with Reconfigurable Quantum Processors
Nishad Maskara, Stefan Ostermann, James Shee +9
Simulations of quantum chemistry and quantum materials are believed to be among the most important potential applications of quantum information processors, but realizing practical…
Probing topological entanglement on large scales
Robert Ott, Torsten V. Zache, Nishad Maskara +3
Topologically ordered quantum matter exhibits intriguing long-range patterns of entanglement, which reveal themselves in subsystem entropies. However, measuring such entropies, whi…
Controlling many-body dynamics with driven quantum scars in Rydberg atom arrays
Dolev Bluvstein, Ahmed Omran, Harry Levine +12
Controlling non-equilibrium quantum dynamics in many-body systems is an outstanding challenge as interactions typically lead to thermalization and a chaotic spreading throughout Hi…
Low-Overhead Transversal Fault Tolerance for Universal Quantum Computation
Hengyun Zhou, Chen Zhao, Madelyn Cain +7
Fast, reliable logical operations are essential for realizing useful quantum computers. By redundantly encoding logical qubits into many physical qubits and using syndrome measurem…
Engineering quantum criticality and dynamics on an analog-digital simulator
Alexandra A. Geim, Nazli Ugur Koyluoglu, Simon J. Evered +14
Understanding emergent phenomena in out-of-equilibrium interacting many-body systems is an exciting frontier in physical science. While quantum simulators represent a promising app…
Fast simulation of fermions with reconfigurable qubits
Nishad Maskara, Marcin Kalinowski, Daniel Gonzalez-Cuadra +1
Performing large-scale, accurate quantum simulations of many-fermion systems is a central challenge in quantum science, with applications in chemistry, materials, and high-energy p…
A quantum processor based on coherent transport of entangled atom arrays
Dolev Bluvstein, Harry Levine, Giulia Semeghini +9
The ability to engineer parallel, programmable operations between desired qubits within a quantum processor is central for building scalable quantum information systems. In most st…
Quantum quench dynamics as a shortcut to adiabaticity
Alexander Lukin, Benjamin F. Schiffer, Boris Braverman +9
The ability to efficiently prepare ground states of quantum Hamiltonians via adiabatic protocols is typically limited by the smallest energy gap encountered during the quantum evol…
Advantages of versatile neural-network decoding for topological codes
Nishad Maskara, Aleksander Kubica, Tomas Jochym-O'Connor
Finding optimal correction of errors in generic stabilizer codes is a computationally hard problem, even for simple noise models. While this task can be simplified for codes with s…
Fault-tolerant compiling of classically hard IQP circuits on hypercubes
Dominik Hangleiter, Marcin Kalinowski, Dolev Bluvstein +6
Realizing computationally complex quantum circuits in the presence of noise and imperfections is a challenging task. While fault-tolerant quantum computing provides a route to redu…
Hardware-efficient quantum phase estimation via local control
Benjamin F. Schiffer, Dominik S. Wild, Nishad Maskara +2
Quantum phase estimation plays a central role in quantum simulation as it enables the study of spectral properties of many-body quantum systems. Most variants of the phase estimati…