Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,363 papers in 12 months (-8% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Circuit Components for Cognitive Decision-Making
D. Widdows, J. Rani, E. Pothos·Feb 6, 2023
This paper demonstrates that some non-classical models of human decision-making can be run successfully as circuits on quantum computers. Since the 1960s, many observed cognitive behaviors have been shown to violate rules based on classical probabili...
Virtual quantum error detection
Kento Tsubouchi, Yasunari Suzuki, Y. Tokunaga +2 more·Feb 6, 2023
Quantum error correction and quantum error detection necessitate syndrome measurements to detect errors. Performing syndrome measurements for each stabilizer generator can be a significant overhead, considering the fact that the readout fidelity in t...
On low-depth algorithms for quantum phase estimation
Hongkang Ni, Haoya Li, Lexing Ying·Feb 5, 2023
Quantum phase estimation is one of the critical building blocks of quantum computing. For early fault-tolerant quantum devices, it is desirable for a quantum phase estimation algorithm to (1) use a minimal number of ancilla qubits, (2) allow for inex...
Precision of quantum simulation of all-to-all coupling in a local architecture
E. Mozgunov·Feb 5, 2023
We present a simple 2d local circuit that implements all-to-all interactions via perturbative gadgets. We find an analytic relation between the values $J_{ij}$ of the desired interaction and the parameters of the 2d circuit, as well as the expression...
Model-Free Quantum Gate Design and Calibration Using Deep Reinforcement Learning
Omar Shindi, Qi Yu, Parth Girdhar +1 more·Feb 5, 2023
High-fidelity quantum gate design is important for various quantum technologies, such as quantum computation and quantum communication. Numerous control policies for quantum gate design have been proposed given a dynamical model of the quantum system...
A High Performance Compiler for Very Large Scale Surface Code Computations
George Watkins, Minh Hoang Nguyen, Keelan Watkins +3 more·Feb 5, 2023
We present the first high performance compiler for very large scale quantum error correction: it translates an arbitrary quantum circuit to surface code operations based on lattice surgery. Our compiler offers an end to end error correction workflow ...
Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics
Matthew J. McEwen, D. Bacon, C. Gidney·Feb 4, 2023
The typical time-independent view of quantum error correction (QEC) codes hides significant freedom in the decomposition into circuits that are executable on hardware. Using the concept of detecting regions, we design time-dynamic QEC circuits direct...
Symmetric hypergraph states: Entanglement quantification and robust Bell nonlocality
Jan Nöller, Otfried Gühne, Mariami Gachechiladze·Feb 3, 2023
Quantum hypergraph states are the natural generalization of graph states. Here we investigate and analytically quantify entanglement and nonlocality for large classes of quantum hypergraph states. More specifically, we connect the geometric measure o...
Topological order from measurements and feed-forward on a trapped ion quantum computer
Mohsin Iqbal, Nathanan Tantivasadakarn, T. Gatterman +13 more·Feb 3, 2023
Quantum systems evolve in time in one of two ways: through the Schrödinger equation or wavefunction collapse. So far, deterministic control of quantum many-body systems in the lab has focused on the former, due to the probabilistic nature of measurem...
Investigating the effect of circuit cutting in QAOA for the MaxCut problem on NISQ devices
Marvin Bechtold, Johanna Barzen, F. Leymann +4 more·Feb 3, 2023
Noisy intermediate-scale quantum (NISQ) devices are restricted by their limited number of qubits and their short decoherence times. An approach addressing these problems is quantum circuit cutting. It decomposes the execution of a large quantum circu...
Bulk-to-boundary anyon fusion from microscopic models
Julio C. Magdalena de la Fuente, Jens Eisert, A. Bauer·Feb 3, 2023
Topological quantum error correction based on the manipulation of the anyonic defects constitutes one of the most promising frameworks towards realizing fault-tolerant quantum devices. Hence, it is crucial to understand how these defects interact wit...
Quantum data-syndrome codes: Subsystem and impure code constructions
Andrew Nemec·Feb 3, 2023
Quantum error correction requires the use of error syndromes derived from measurements that may be unreliable. Recently, quantum data-syndrome (QDS) codes have been proposed as a possible approach to protect against both data and syndrome errors, in ...
Low-depth simulations of fermionic systems on square-grid quantum hardware
Manuel G. Algaba, P. V. Sriluckshmy, M. Leib +1 more·Feb 3, 2023
We present a general strategy for mapping fermionic systems to quantum hardware with square qubit connectivity which yields low-depth quantum circuits, counted in the number of native two-qubit fSIM gates. We achieve this by leveraging novel operator...
Bright semiconductor single-photon sources pumped by heterogeneously integrated micropillar lasers with electrical injections
Xueshi Li, Shunfa Liu, Yuming Wei +11 more·Feb 3, 2023
The emerging hybrid integrated quantum photonics combines the advantages of different functional components into a single chip to meet the stringent requirements for quantum information processing. Despite the tremendous progress in hybrid integratio...
Resilient superconducting-element design with genetic algorithms
F. C'ardenas-L'opez, J. C. Retamal, Xi Chen +2 more·Feb 3, 2023
We present superconducting quantum circuits that exhibit atomic energy spectra and selection rules in ladder and lambda three-level configurations designed using genetic algorithms. These heuristic optimization techniques are employed to adapt the to...
GA4QCO: Genetic Algorithm for Quantum Circuit Optimization
Leo Sunkel, Darya Martyniuk, Denny Mattern +2 more·Feb 2, 2023
The design of quantum circuits is often still done manually, for instance by following certain patterns or rule of thumb. While this approach may work well for some problems, it can be a tedious task and present quite the challenge in other situation...
Dynamical Quantum Phase Transitions of the Schwinger Model: Real-Time Dynamics on IBM Quantum
Domenico Pomarico, L. Cosmai, P. Facchi +3 more·Feb 2, 2023
Simulating the real-time dynamics of gauge theories represents a paradigmatic use case to test the hardware capabilities of a quantum computer, since it can involve non-trivial input states’ preparation, discretized time evolution, long-distance enta...
Generalized Uncertainty Principles for Quantum Cryptography
Randy Kuang·Feb 2, 2023
We know the classical public cryptographic algorithms are based on certain NP-hard problems such as the integer factoring in RSA and the discrete logarithm in Diffie-Hellman. They are going to be vulnerable with fault-tolerant quantum computers. We a...
Trap-Integrated Superconducting Nanowire Single-Photon Detectors with Improved RF Tolerance for Trapped-Ion Qubit State Readout.
B. Hampel, D. Slichter, D. Leibfried +3 more·Feb 2, 2023
State readout of trapped-ion qubits with trap-integrated detectors can address important challenges for scalable quantum computing, but the strong rf electric fields used for trapping can impact detector performance. Here, we report on NbTiN supercon...
Fault-tolerant connection of error-corrected qubits with noisy links
Joshua Ramette, Josiah Sinclair, N. P. Breuckmann +1 more·Feb 2, 2023
One of the most promising routes toward scalable quantum computing is a modular approach. We show that distinct surface code patches can be connected in a fault-tolerant manner even in the presence of substantial noise along their connecting interfac...