Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Wavefront Correction Via Machine Learning for Satellite‐to‐Earth CV‐QKD
Nathan K. Long, Ziqing Wang, B. Dix-Matthews +4 more·Aug 14, 2025
State‐of‐the‐art free‐space continuous‐variable quantum key distribution (CV‐QKD) protocols use phase reference pulses to modulate the wavefront of a real local oscillator at the receiver, thereby compensating for wavefront distortions caused by atmo...
Efficient Quantum Information-Inspired Ansatz for Variational Quantum Eigensolver Algorithm: Applications to Atomic Systems
A. Kalam, Prasenjit Deb, A. Sakurai +3 more·Aug 14, 2025
We present a quantum information-inspired ansatz for the variational quantum eigensolver (VQE) and demonstrate its efficacy in calculating ground-state energies of atomic systems. Instead of adopting a heuristic approach, we start with an approximate...
Scalable platform for qudit-based quantum computing using polar molecules
Soleh Kh. Muminov, Evgeniy O. Kiktenko, Anastasiia S. Nikolaeva +4 more·Aug 14, 2025
We propose a scalable qudit-based quantum processor using rotational states of polar molecules. Previously, molecular internal states were used to enlarge Hilbert space, whereas our approach uses optical tweezer arrays to achieve scalable architectur...
Improving quantum communication rates with permutation-invariant codes
Sujeet Bhalerao, Felix Leditzky·Aug 13, 2025
In this work we improve the quantum communication rates of various quantum channels of interest using permutation-invariant quantum codes. We focus in particular on parametrized families of quantum channels and aim to improve bounds on their quantum ...
Projective Measurements: Topological Quantum Computing with an Arbitrary Number of Qubits
Themba Hodge, Philipp Frey, Stephan Rachel·Aug 13, 2025
Topological quantum computing promises intrinsic fault tolerance by encoding quantum information in non-Abelian anyons, where quantum gates are implemented via braiding. While braiding operations are robust against local perturbations, a critical yet...
Metrological power of single-qubit dynamical Casimir effect in circuit QED
H.R. Schelb, A. P. Costa, A. Dodonov·Aug 13, 2025
We consider a nonstationary circuit QED system described by the quantum Rabi model, in which an artificial two-level atom with a tunable transition frequency is coupled to a single-mode resonator. We focus on regimes where the external modulation tak...
Constrained free energy minimization for the design of thermal states and stabilizer thermodynamic systems
Michele Minervini, Madison Chin, Jacob Kupperman +6 more·Aug 12, 2025
A quantum thermodynamic system is described by a Hamiltonian and a list of conserved, non-commuting charges, and a fundamental goal is to determine the minimum energy of the system subject to constraints on the charges. Recently, [Liu et al., arXiv:2...
Mutually equibiased bases
Seyed Javad Akhtarshenas, Saman Karimi, Mahdi Salehi·Aug 12, 2025
In the framework of mutually unbiased bases (MUBs), a measurement in one basis gives \emph{no information} about the outcomes of measurements in another basis. Here, we relax the no-information condition by allowing the $d$ outcomes to be predicted a...
Realizing the Petz Recovery Map on an NMR Quantum Processor
Gayatri Singh, Ramchandra Sahani, V. Jagadish +3 more·Aug 12, 2025
The Petz recovery map is a fundamental protocol in quantum information theory, enabling the retrieval of quantum information lost due to noisy processes. Here, we experimentally implement the Petz recovery map on a nuclear magnetic resonance (NMR) qu...
Single-Shot Decoding and Fault-tolerant Gates with Trivariate Tricycle Codes
Abraham Jacob, Campbell McLauchlan, Dan E. Browne·Aug 11, 2025
While quantum low-density parity check (qLDPC) codes are a low-overhead means of quantum information storage, it is valuable for quantum codes to possess fault-tolerant features beyond this resource efficiency. In this work, we introduce trivariate t...
Memory Effects and Entanglement Dynamics of Finite time Acceleration
Nitesh K. Dubey, Sanved Kolekar·Aug 11, 2025
We construct a smooth trajectory in Minkowski spacetime that is inertial in the asymptotic past and future but undergoes approximately uniform acceleration for a finite duration. In a suitable limit, this trajectory reduces to the standard Rindler tr...
Average Contraction Coefficients of Quantum Channels
Rubén Ibarrondo, Daniel Stilck Francca·Aug 11, 2025
The data-processing inequality ensures quantum channels reduce state distinguishability, with contraction coefficients quantifying optimal bounds. However, these can be overly optimistic and not representative of the usual behavior. We study how nois...
Spin Phonon Coupling and Relaxation time in Lu(II) compound with 9.2GHz clock transition
Xiaoliang Zhang, Haechan Park·Aug 11, 2025
Electron spin qubits operating at atomic clock transitions exhibit exceptionally long coherence times, making them promising candidates for scalable quantum information applications. In solid-state systems, interactions between qubits and lattice pho...
Deterministic Integration of CsPbBr3 Quantum Dots with Plasmonic Ring Microcavities
Pengji Li, Chenxi Ma, Jingzhong Yang +8 more·Aug 11, 2025
Perovskite quantum dots hold great promise for quantum information processing as wavelength-tunable single photon sources operable over a broad temperature range. However, their deterministic integration into nanophotonic structures remains a major c...
Exponentially Improved Constant in Quantum Solution Extraction
Gumaro Rendon·Aug 11, 2025
We have provided an algorithm to extract a smooth and positive definite function $\psi(x)$ encoded in quantum memory of size $2^n$ without running into the problem of exponentially suppressed sub-normalization. Through this, we remove an important bo...
Scheduling of syndrome measurements with a few ancillary qubits
Shintaro Sato, Yasunari Suzuki·Aug 11, 2025
Quantum error-correcting codes are a vital technology for demonstrating reliable quantum computation. They require data qubits for encoding quantum information and ancillary qubits for taking error syndromes necessary for error correction. The need f...
Block encoding the 3D heterogeneous Poisson equation with application to fracture flow
Austin Pechan, John Golden, Daniel O'Malley·Aug 10, 2025
Quantum linear system (QLS) algorithms offer the potential to solve large-scale linear systems exponentially faster than classical methods. However, applying QLS algorithms to real-world problems remains challenging due to issues such as state prepar...
State-adaptive quantum error correction and fault-tolerant quantum computing
D. -S. Wang·Aug 8, 2025
We present a theoretical framework for state-adaptive quantum error correction that bridges the gap between quantum computing and error correction paradigms. By incorporating knowledge of quantum states into the error correction process, we establish...
Joint parameter estimation and multidimensional reconciliation for continuous-variable quantum key distribution
Jisheng Dai, Xue-Qin Jiang, Peng Huang +2 more·Aug 7, 2025
Accurate quantum channel parameter estimation is essential for effective information reconciliation in continuous-variable quantum key distribution (CV-QKD). However, conventional maximum likelihood (ML) estimators rely on a large amount of discarded...
Optimal Qubit Purification and Unitary Schur Sampling via Random SWAP Tests
Shrigyan Brahmachari, Austin Hulse, Henry D. Pfister +1 more·Aug 7, 2025
The goal of qubit purification is to combine multiple noisy copies of an unknown pure quantum state to obtain one or more copies that are closer to the pure state. We show that a simple protocol based solely on random SWAP tests achieves the same fid...