Papers
Live trends in quantum computing research, updated daily from arXiv.
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31,132
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Research Volume
15,343 papers in 12 months (-9% vs prior quarter)
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Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Error-corrected Hadamard gate simulated at the circuit level
G. P. Gehér, Campbell McLauchlan, Earl T. Campbell +2 more·Dec 18, 2023
We simulate the logical Hadamard gate in the surface code under a circuit-level noise model, compiling it to a physical circuit on square-grid connectivity hardware. Our paper is the first to do this for a logical unitary gate on a quantum error-corr...
Fewer Measurements from Shadow Tomography with N-Representability Conditions.
Irma Avdic, D. Mazziotti·Dec 18, 2023
Classical shadow tomography provides a randomized scheme for approximating the quantum state and its properties at reduced computational cost with applications in quantum computing. In this Letter we present an algorithm for realizing fewer measureme...
Harnessing Inherent Noises for Privacy Preservation in Quantum Machine Learning
Keyi Ju, Xiaoqi Qin, Hui Zhong +3 more·Dec 18, 2023
Quantum computing revolutionizes the way of solving complex problems and handling vast datasets, which shows great potential to accelerate the machine learning process. However, data leakage in quantum machine learning (QML) may present privacy risks...
Submicrosecond high-fidelity dispersive readout of a spin qubit with squeezed photons
Chon‐Fai Kam, Xuedong Hu·Dec 17, 2023
Fast and high-fidelity qubit measurement is essential for realizing quantum error correction, which is in turn a key ingredient to universal quantum computing. For electron spin qubits, fast readout is one of the significant road blocks toward error ...
Comparing Shor and Steane error correction using the Bacon-Shor code
Shilin Huang, Kenneth R. Brown, Marko Cetina·Dec 17, 2023
Quantum states decohere through interaction with the environment. Quantum error correction can preserve coherence through active feedback wherein quantum information is encoded into a logical state with a high degree of symmetry. Perturbations are de...
On the Validity of the Weak Value Approximation
Benjamin Noë Bauml·Dec 16, 2023
The weak value approximation has been in use for thirty-five years, but it has not as of yet received a truly complete derivation, leaving its mathematical validity in a state of limbo. Herein, I fill this gap, deriving the weak value approximation u...
QRCC: Evaluating Large Quantum Circuits on Small Quantum Computers through Integrated Qubit Reuse and Circuit Cutting
Aditya Pawar, Yingheng Li, Zewei Mo +4 more·Dec 16, 2023
Quantum computing has recently emerged as a promising computing paradigm for many application domains. However, the size of quantum circuits that can be run with high fidelity is constrained by the limited quantity and quality of physical qubits. Rec...
Incoherent approximation of leakage in quantum error correction
Jeffrey Marshall, D. Kafri·Dec 16, 2023
Quantum error correcting codes typically do not account for quantum state transitions - leakage - out of the computational subspace. Since these errors can last for multiple detection rounds they can significantly contribute to logical errors. It is ...
Learning, Optimizing, and Simulating Fermions with Quantum Computers
Andrew Zhao·Dec 16, 2023
Fermions are fundamental particles which obey seemingly bizarre quantum-mechanical principles, yet constitute all the ordinary matter that we inhabit. As such, their study is heavily motivated from both fundamental and practical incentives. In this d...
Reconfigurable quantum photonic circuits based on quantum dots
Adam McCaw, Jacob Ewaniuk, B. Shastri +1 more·Dec 16, 2023
Abstract Quantum photonic integrated circuits, composed of linear-optical elements, offer an efficient way for encoding and processing quantum information on-chip. At their core, these circuits rely on reconfigurable phase shifters, typically constru...
Optimal joint cutting of two-qubit rotation gates
Christian Ufrecht, Laura S. Herzog, Daniel D. Scherer +4 more·Dec 15, 2023
Circuit cutting, the partitioning of quantum circuits into smaller independent fragments, has become a promising avenue for scaling up current quantum-computing experiments. Here, we introduce a scheme for joint cutting of two-qubit rotation gates ba...
Demonstration of Fault-Tolerant Steane Quantum Error Correction
L. Postler, Friederike Butt, Ivan Pogorelov +7 more·Dec 15, 2023
Encoding information redundantly using quantum error-correcting (QEC) codes allows one to overcome the inherent sensitivity to noise in quantum computers to ultimately achieve large-scale quantum computation. The Steane QEC method involves preparing ...
Quantum Generative Adversarial Networks: Bridging Classical and Quantum Realms
Sahil Nokhwal, Suman Nokhwal, Saurabh Pahune +1 more·Dec 15, 2023
In this pioneering research paper, we present a groundbreaking exploration into the synergistic fusion of classical and quantum computing paradigms within the realm of Generative Adversarial Networks (GANs). Our objective is to seamlessly integrate q...
Efficient quantum simulation of nonlinear interactions using SNAP and Rabi gates
Kimin Park, P. Marek, R. Filip·Dec 15, 2023
Quantum simulations provide means to probe challenging problems within controllable quantum systems. However, implementing or simulating deep-strong nonlinear couplings between bosonic oscillators on physical platforms remains a challenge. We present...
Accurate and gate-efficient quantum Ansätze for electronic states without adaptive optimization
Hugh G. A. Burton·Dec 15, 2023
The ability of quantum computers to overcome the exponential memory scaling of many-body problems is expected to transform quantum chemistry. Quantum algorithms require accurate representations of electronic states on a quantum device, but current ap...
Quantum algorithm for solving the advection equation using Hamiltonian simulation
Peter Brearley, Sylvain Laizet·Dec 15, 2023
A quantum algorithm for solving the advection equation by embedding the discrete time-marching operator into Hamiltonian simulations is presented. One-dimensional advection can be simulated directly since the central finite-difference operator for fi...
VDOO: A Short, Fast, Post-Quantum Multivariate Digital Signature Scheme
Anindya Ganguly, A. Karmakar, Nitin Saxena·Dec 15, 2023
Hard lattice problems are predominant in constructing post-quantum cryptosystems. However, we need to continue developing post-quantum cryptosystems based on other quantum hard problems to prevent a complete collapse of post-quantum cryptography due ...
Making the zeroth-order process fidelity independent of state preparation and measurement errors
Yu-Hao Chen, Renata Wong, Hsi-Sheng Goan·Dec 14, 2023
In this work, we demonstrate that the zero-fidelity, an approximation to the process fidelity, when combined with randomized benchmarking, becomes robust to state preparation and measurement (SPAM) errors. However, as randomized benchmarking requires...
Vacuum Beam Guide for Large Scale Quantum Networks.
Yuexun Huang, F. Salces-Cárcoba, R. Adhikari +2 more·Dec 14, 2023
The vacuum beam guide (VBG) presents a completely different solution for quantum channels to overcome the limitations of existing fiber and satellite technologies for long-distance quantum communication. With an array of aligned lenses spaced kilomet...
Speed limits of two-qubit gates with qudits
Bora Basyildiz, Casey Jameson, Zhexuan Gong·Dec 14, 2023
The speed of elementary quantum gates ultimately sets the limit on the speed at which quantum circuits can operate. For a fixed physical interaction strength between two qubits, the speed of any two-qubit gate is limited even with arbitrarily fast si...