Alexey V. Gorshkov

Measurement-Induced Entanglement in Noisy 2D Random Circuits

Zhi-Yuan Wei, Jon Nelson, Joel Rajakumar, Esther Cruz et autres

We study measurement-induced entanglement (MIE) generated by column-by-column sampling of noisy 2D random circuits of size N and depth T . Focusing primarily on Clifford circuits and using the operator entanglement S op of the sampling-induced boundary state as a proxy for …

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Lieb-Mattis States for Robust Entangled Differential Phase Sensing

Raphael Kaubruegger, Diego Fallas Padilla, Athreya Shankar, Christoph Hotter et autres

We explore a two-node, entanglement-enhanced sensor network for differential phase sensing that exploits decoherence-free subspaces to suppress common-mode noise, a primary limitation of many state-of-the-art quantum sensors. We identify a class of entangled states that, while not strictly optimal, achieve the same …

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Vapor-cavity-QED system for quantum computation and communication

Sharoon Austin, Dhruv Devulapalli, Khoi Tuan Hoang, Feng Zhou et autres

In this work, we propose performing key operations in quantum computation and communication using room-temperature atoms moving across a grid of high-quality-factor, small-mode-volume cavities. These cavities enable high-cooperativity interactions with single atoms to be achieved with a characteristic timescale much shorter than …

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String-Breaking Dynamics in Quantum Adiabatic and Diabatic Processes

Federica Maria Surace, Alessio Lerose, Or Katz, Elizabeth R. Bennewitz et autres

Confinement prohibits isolation of color charges, e.g., quarks, in nature via a process called : the separation of two charges results in an increase in the energy of a color flux, visualized as a string, connecting those charges. Eventually, creating additional charges …

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Correlated Noise Estimation with Quantum Sensor Networks

Anthony J. Brady, Victor V. Albert, Alexey V. Gorshkov, Quntao Zhuang

We address the metrological problem of estimating collective stochastic properties imprinted on a network of quantum sensors. Canonical examples include center-of-mass quadrature fluctuations in a system of bosonic modes and correlated dephasing in an ensemble of qubits (e.g., spins), bosons, or fermions. …

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Correlated Noise Estimation with Quantum Sensor Networks

Anonymous, Yuxin Wang, Victor V. Albert, Alexey V. Gorshkov et autres

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Reshaping the Quantum Arrow of Time

Luis Pedro García-Pintos, Yi-Kai Liu, Alexey V. Gorshkov

While the microscopic laws of physics are often symmetric under time reversal, most natural processes that we observe are not. The emergent asymmetry between typical and time-reversed processes is referred to as the arrow of time. In quantum physics, an arrow of …

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Nonequilibrium universality of the nonreciprocally coupled O ( n 1 ) × O ( n 2 ) model

Jeremy T. Young, Alexey V. Gorshkov, Mohammad Maghrebi

Nonequilibrium dynamics play an important role in all contexts of physics, both classical and quantum as well as living and nonliving, so it is crucial to develop a foundational understanding of nonequilibrium phase transitions. In this work we investigate an important class …

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Instability of steady-state mixed-state symmetry-protected topological order to strong-to-weak spontaneous symmetry breaking

Jeet Shah, Christopher Fechisin, Joseph T. Iosue, James D. Watson et autres

Recent experimental progress in controlling open quantum systems enables the pursuit of mixed-state nonequilibrium quantum phases. We investigate whether open quantum systems hosting mixed-state symmetry-protected topological states as steady states retain this property under symmetric perturbations. Focusing on the decohered cluster state …

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Dynamical Complexity of Non-Gaussian Many-Body Systems with Dissipation

Guillermo González-García, Alexey V. Gorshkov, J. I. Cirac, Rahul Trivedi

We characterize the dynamical state of many-body bosonic and fermionic many-body models with intersite Gaussian couplings, on-site non-Gaussian interactions, and local dissipation comprising incoherent particle loss, particle gain, and dephasing. We first establish that, for fermionic systems, if the dephasing noise is …

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Incoherent Imaging with Spatially Structured Quantum Probes

Anthony J. Brady, Zihao Gong, Alexey V. Gorshkov, Saikat Guha

Incoherent imaging, including fluorescence and absorption microscopy, is often limited by weak signals and resolution constraints -- notoriously, Rayleigh's curse. We investigate how spatially structured quantum probes, combined with quantum detection strategies like spatial mode demultiplexing and photon counting, overcome these limitations. …

Measuring gravitational lensing time delays with quantum information processing

Zhenning Liu, William DeRocco, Shiming Gu, Emil T. Khabiboulline et autres

The gravitational fields of astrophysical bodies bend the light around them, creating multiple paths along which light from a distant source can arrive at Earth. Measuring the difference in photon arrival time along these different paths provides a means of determining the …