Papers
MQTE: A Measurement-Based Quantum Algorithm for Robust Energy Spectrum Estimation in the NISQ Era
Qing-Xing Xie, Yong-Kang Duan, Fa-Hui Liu +1 more·Mar 18, 2026
Extracting energy spectra from quantum Hamiltonians is a fundamental task for quantum simulation, yet remains challenging on noisy intermediate-scale quantum (NISQ) devices. We propose Measured Quantum Time Evolution (MQTE), an ancilla-free algorithm...
Beyond VQE and QPE: A Noise- and Sampling-Error-Tolerant Quantum Algorithm with Heisenberg-Limited Precision
Qing-Xing Xie, Zidong Lin, Yun-Long Liu +1 more·Mar 18, 2026
This paper introduces Witnessed Quantum Time Evolution (WQTE), a novel quantum algorithm for efficiently computing the eigen-energy spectra of arbitrary quantum systems without requiring eigenstate preparation-a key limitation of conventional approac...
Optimal detection of dissipation in Lindbladian dynamics
Yiyi Cai·Mar 18, 2026
Experimental implementations of Hamiltonian dynamics are often affected by dissipative noise arising from interactions with the environment. This raises the question of whether one can detect the presence or absence of such dissipation using only acc...
Independent Trivariate Bicycle Codes
Aygul Azatovna Galimova·Mar 18, 2026
We introduce six independent trivariate bicycle (ITB) codes, which extend the bivariate bicycle framework of Bravyi et al.\ to three cyclic dimensions. Using asymmetric polynomial pairs on three-dimensional tori, we construct four codes including a $...
Quantum Simulation of Non-Hermitian Linear Response via Schrödingerization
Jeongbin Jo·Mar 18, 2026
Linear response theory and Green's functions provide a universal framework for understanding dynamical correlations in strongly correlated open quantum systems. While the theoretical foundation for non-Hermitian linear response has been recently esta...
Noise-resilient nonadiabatic geometric quantum computation for bosonic binomial codes
Dong-Sheng Li, Yang Xiao, Yu Wang +5 more·Mar 18, 2026
The binomial code is renowned for its parity-mediated loss immunity and loss-error recoverability, while geometric phases are widely recognized for their intrinsic resilience against noise. Capitalizing on their complementary merits, we propose a noi...
Quantum memory precludes mixed-unitary dynamics
Charlotte Bäcker, Konstantin Beyer, Walter T. Strunz·Mar 17, 2026
Unital quantum channels, defined by their property of leaving the maximally mixed state invariant, form an important class of quantum operations. A distinguished subset of these channels can be represented as a probabilistic mixture of unitary evolut...
Secure Quantum Communication: Simulation and Analysis of Quantum Key Distribution Protocols
Mahendra Rasay, Emmanuel D. Sebastian, Subhash Prasad Sah +2 more·Mar 17, 2026
Quantum computing poses significant threats to conventional cryptographic techniques such as RSA and AES, motivating the need for quantum secure communication methods. Quantum Key Distribution (QKD) offers information theoretic security based on fund...
Quantum dynamics of few-photon pulsed waveguide-QED with a single artificial atom: frequency-dependent scattering theory and time-dependent matrix product states
Sofia Arranz Regidor, Matthew Kozma, Stephen Hughes·Mar 17, 2026
We present a quantum dynamical study of pulsed few-photon scattering from a single artificial atom, consisting of a two-level system (TLS) or qubit, in a waveguide QED system, directly comparing and contrasting two different quantum theoretical simul...
Achieving Sub-Zeptonewton Force Sensitivity and Spin-Motion Entanglement in Levitated Diamond via Pulsed Backaction Evasion
Gayathrini Premawardhana, Jonathan Beaumariage, M. V. Gurudev Dutt +3 more·Mar 17, 2026
We propose a system to achieve sub-zeptonewton force sensing and robust spin-mechanical entanglement in a levitated diamond system. By coupling a Nitrogen-Vacancy (NV) center spin to the motion of its host diamond within a magnetic trap, we develop a...
Optical Chopping Enhanced Rydberg-Atom-Based Ultra-Low-Frequency Electric Field Measurement
Yipeng Xie, Mingwei Lei, Wenbo Dong +1 more·Mar 17, 2026
This study demonstrates a significant enhancement in ultra-low-frequency (ULF) electric field sensitivity using Rydberg atoms via an optical chopping amplification (OCA) technique. Conventional Rydberg-based ULF measurements are fundamentally limited...
Hybrid Classical-Quantum Transfer Learning with Noisy Quantum Circuits
D. Martín-Pérez, F. Rodríguez-Díaz, D. Gutiérrez-Avilés +2 more·Mar 17, 2026
Quantum transfer learning combines pretrained classical deep learning models with quantum circuits to reuse expressive feature representations while limiting the number of trainable parameters. In this work, we introduce a family of compact quantum t...
3D tomography of exchange phase in a Si/SiGe quantum dot device
Dylan Albrecht, Sarah Thompson, N. Tobias Jacobson +1 more·Mar 17, 2026
The exchange interaction is a foundational building block for the operation of spin-based quantum processors. Extracting the exchange interaction coefficient $J(\mathbf{V})$, as a function of gate electrode voltages, is important for understanding di...
Simultaneous amplitude and phase spectroscopy using two-photon interference
Kyle M. Jordan, Yingwen Zhang, Frédéric Bouchard +5 more·Mar 16, 2026
Quantum spectroscopy seeks to probe chemical systems using nonclassical light, which has properties that are qualitatively and quantitatively different than conventional light sources. One promising technique uses intensity-correlated twin beams of l...
Enhancing qubit readout fidelity with two-mode squeezing of the coherent measurement signal
Baleegh Abdo, William Shanks, Oblesh Jinka +1 more·Mar 16, 2026
The ability to perform high-fidelity quantum nondemolition qubit readout is pivotal for the realization of large and powerful quantum computers. Such readout of superconducting qubits is generally enabled by amplifying the weak dispersive measurement...
A fault-tolerant encoding for qubit-controlled collective spins
Charlotte Franke, Dorian A. Gangloff·Mar 16, 2026
Quantum error correction (QEC) is indispensable for scalable quantum computing, but implementing it with minimal hardware overhead remains a central challenge. Large spin systems with collective degrees of freedom offer a promising route to reducing ...
Quantum Noise Suppression at Scale with Crosstalk-Robust Gate Sets
Andy J. Goldschmidt, Emilio Peláez Cisneros, Ryan Sitler +3 more·Mar 16, 2026
We introduce crosstalk-robust gate sets, which are obtained using a novel, scalable optimal control problem exploiting locality. Through the suppression of pairwise quantum crosstalk, the gate sets enable robustness that extends to multi-qubit circui...
Entanglement advantage in sensing power-law spatiotemporal noise correlations
Yu-Xin Wang, Anthony J. Brady, Federico Belliardo +1 more·Mar 16, 2026
Noise sensing underlies many physical applications including tests of non-classicality, thermometry, verification of correlated phases of quantum matter, and characterization of criticality. While previous works have shown that quantum resources such...
Simulating the Open System Dynamics of Multiple Exchange-Only Qubits using Subspace Monte Carlo
Tameem Albash, N. Tobias Jacobson·Mar 16, 2026
We propose a Monte Carlo based method for simulating the open system dynamics of multiple exchange-only (EO) qubits. In the EO encoding, the total spin projection quantum number along the $z$-axis of the three constituent spins remains unchanged unde...
Noise and dynamics in acoustoelectric waveguides
Ryan O. Behunin, Andrew Shepherd, Ruoyu Yuan +5 more·Mar 16, 2026
We present a quantum field theoretic formulation of acoustoelectric interactions in waveguide-like systems of arbitrary cross-section. Building on an open quantum systems approach, we derive a unified description of plasmon-phonon coupling that incor...