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Live trends in quantum computing research, updated daily from arXiv.
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Practical scheme for efficient distillation of GHZ states
'Aron Rozgonyi, G'abor Sz'echenyi, Orsolya K'alm'an +1 more·Jan 21, 2025
We develop an efficient local operation and classical communication (LOCC) scheme for the distillation of Greenberger-Horne-Zeilinger (GHZ) states from tripartite systems subjected to both coherent and incoherent errors. The proposed method employs a...
PIMutation: Exploring the Potential of Real PIM Architecture for Quantum Circuit Simulation
Dongin Lee, Enhyeok Jang, Seungwoo Choi +3 more·Jan 20, 2025
Quantum circuit simulations are essential for the verification of quantum algorithms on behalf of real quantum devices. However, the memory requirements for such simulations grow exponentially with the number of qubits involved in quantum programs. M...
Optical nuclear electric resonance as single qubit gate for trapped neutral atoms
Johannes K. Krondorfer, Sebastian Pucher, Matthias Diez +2 more·Jan 19, 2025
The precise control of nuclear spin states is crucial for a wide range of quantum technology applications. Here, we propose a fast and robust single-qubit gate in $^{87}$Sr, utilizing the concept of optical nuclear electric resonance (ONER). ONER exp...
On the correlation between entanglement and the negative sign problem
Ping Xu, Yang Shen, Yuan-Yao He +1 more·Jan 19, 2025
In this work, we study the correlation between entanglement and the negative sign problem in quantum Monte Carlo for the simulation of low-dimensional strongly correlated quantum many body systems. Entanglement entropy characterizes the difficulty of...
An efficient explicit implementation of a near-optimal quantum algorithm for simulating linear dissipative differential equations
Ivan Novikau, Ilon Joseph·Jan 19, 2025
We propose an efficient block-encoding technique for the implementation of the Linear Combination of Hamiltonian Simulations (LCHS) for simulating dissipative initial-value problems. This algorithm approximates a target nonunitary operator as a weigh...
Hamiltonian Lattice Gauge Theories: emergent properties from Tensor Network methods
Giovanni Cataldi·Jan 19, 2025
This thesis develops advanced Tensor Network (TN) methods to address Hamiltonian Lattice Gauge Theories (LGTs), overcoming limitations in real-time dynamics and finite-density regimes. A novel dressed-site formalism is introduced, enabling efficient ...
An RRAM compute-in-memory architecture for high energy-efficient processing of binary matrix-vector multiplication in cryptography
Hao Yue, Yihao Chen, Tianhang Liang +6 more·Jan 18, 2025
Binary matrix-vector multiplication (BMVM) is a key operation in post-quantum cryptography schemes like the Classic McEliece cryptosystem. Conventional computing architectures incur significant energy efficiency loss due to data movement of large mat...
Optimal control in phase space applied to minimal-time transfer of thermal atoms in optical traps
Omar Morandi, Sara Nicoletti, Vladislav Gavryusev +1 more·Jan 17, 2025
We present an optimal control procedure for the non-adiabatic transport of ultracold neutral thermal atoms in optical tweezers arranged in a one-dimensional array, with focus on reaching minimal transfer time. The particle dynamics are modeled first ...
Quantum simulation of a class of highly-oscillatory transport equations via Schrödingerisation
Anjiao Gu, Shi Jin·Jan 17, 2025
In this paper, we present quantum algorithms for a class of highly-oscillatory transport equations, which arise in semiclassical computation of surface hopping problems and other related non-adiabatic quantum dynamics, based on the Born-Oppenheimer a...
Partonic distribution functions and amplitudes using tensor network methods
Zhong-Bo Kang, Noah Moran, Peter Nguyen +1 more·Jan 16, 2025
Calculations of the parton distribution function (PDF) and distribution amplitude (DA) are highly relevant to core experimental programs as they provide non-perturbative inputs to inclusive and exclusive processes, respectively. Direct computation of...
Adaptive-depth randomized measurement for fermionic observables
Ka Bian, Bujiao Wu·Jan 16, 2025
Accurate estimation of fermionic observables is essential for advancing quantum physics and chemistry. The fermionic classical shadow (FCS) method offers an efficient framework for estimating these observables without requiring a transformation into ...
Pretty-good simulation of all quantum measurements by projective measurements
M. Kotowski, Michał Oszmaniec·Jan 16, 2025
In quantum theory general measurements are described by so-called Positive Operator-Valued Measures (POVMs). We show that in $d$-dimensional quantum systems an application of depolarizing noise with constant (independent of $d$) visibility parameter ...
Quantum-Centric Algorithm for Sample-Based Krylov Diagonalization
J. Yu, Javier Robledo Moreno, Joseph Iosue +17 more·Jan 16, 2025
Approximating the ground state of many-body systems is a key computational bottleneck underlying important applications in physics and chemistry. The most widely known quantum algorithm for ground state approximation, quantum phase estimation, is out...
Balanced cross-Kerr coupling for superconducting qubit readout
Alex A. Chapple, Othmane Benhayoune-Khadraoui, Simon Richer +1 more·Jan 15, 2025
Dispersive readout, the standard method for measuring superconducting qubits, is limited by multiphoton qubit-resonator processes arising even at moderate drive powers. These processes degrade performance, causing dispersive readout to lag behind sin...
SeQUeNCe GUI: An Extensible User Interface for Discrete Event Quantum Network Simulations
Alexander Kiefer·Jan 15, 2025
With recent advances in the fields of quantum information theory [J. Pablo. Nature 12, 2172 (2021)] and the approach of the Noisy Intermediate-Scale Quantum (NISQ) [J. Preskill. Quantum 2, 79 (2018)] computing era, it is necessary to provide tools fo...
Photon-number conserved universal quantum logic employing continuous-time quantum walk on dual-rail qubit arrays
Hao-Yu Guan, Yifei Li, Xiu-Hao Deng·Jan 15, 2025
We demonstrate a synergy between dual-rail qubit encoding and continuous-time quantum walks (CTQW) to realize universal quantum logic in superconducting circuits. Utilizing the photon-number-conserving dynamics of CTQW on dual-rail transmons, which s...
A modular quantum gas platform
Tobias Hammel, Maximilian Kaiser, Daniel Dux +3 more·Jan 14, 2025
We report on the development of a modular platform for programmable quantum simulation with atomic quantum gases. The platform is centered around exchangeable optical modules with versatile functionalities. The performance of each module is disentang...
Efficient quantum circuit compilation for near-term quantum advantage
Yuchen Guo, Shuo Yang·Jan 13, 2025
Quantum noise in real-world devices poses a significant challenge in achieving practical quantum advantage, since accurately compiled and executed circuits are typically deep and highly susceptible to decoherence. To facilitate the implementation of ...
Improving key rates by tighter information reconciliation leakage estimation for quantum key distribution
Haokun Mao, Bo Yang, Yucheng Qiao +4 more·Jan 13, 2025
Previous research has aimed to precisely estimate information leakage to improve the secure key rate (SKR) and maximum transmission distance in quantum key distribution (QKD). However, existing methods repeatedly considerd the information of the mult...
Entanglement-Assisted Quantum Quasi-Cyclic LDPC Codes with Transversal Logical Operators
Pavan Kumar, A. Sharma, S. Garani·Jan 13, 2025
We derive two families of EA-QC quantum LDPC (EA-QC-QLDPC) codes by tiling permutation matrices of prime and composite orders. The unassisted portion of the Tanner graphs corresponding to these codes, constructed from two distinct classical QC-LDPC c...