160 citations · 1.1k across the 25 of their papers we have counts for
25 papers
Kubo-Martin-Schwinger relation for energy eigenstates of SU(2)-symmetric quantum many-body systems
Jae Dong Noh, Aleksander Lasek, Jade LeSchack +1
The fluctuation-dissipation theorem (FDT) is a fundamental result in statistical mechanics. It stipulates that, if perturbed out of equilibrium, a system responds at a rate proport…
Integrability of Goldilocks quantum cellular automata
Logan E. Hillberry, Lorenzo Piroli, Eric Vernier +3
Goldilocks quantum cellular automata (QCA) have been simulated on quantum hardware and produce emergent small-world correlation networks. In Goldilocks QCA, a single-qubit unitary…
Quantum thermodynamics of nonequilibrium processes in lattice gauge theories
Zohreh Davoudi, Christopher Jarzynski, Niklas Mueller +3
A key objective in nuclear and high-energy physics is to describe nonequilibrium dynamics of matter, e.g., in the early universe and in particle colliders, starting from the Standa…
Complexity-constrained quantum thermodynamics
Anthony Munson, Naga Bhavya Teja Kothakonda, Jonas Haferkamp +3
Quantum complexity measures the difficulty of realizing a quantum process, such as preparing a state or implementing a unitary. We present an approach to quantifying the thermodyna…
Agnostic Phase Estimation
Xingrui Song, Flavio Salvati, Chandrashekhar Gaikwad +3
The goal of quantum metrology is to improve measurements' sensitivities by harnessing quantum resources. Metrologists often aim to maximize the quantum Fisher information, which bo…
Estimation of Hamiltonian parameters from thermal states
Luis Pedro García-Pintos, Kishor Bharti, Jacob Bringewatt +4
We upper- and lower-bound the optimal precision with which one can estimate an unknown Hamiltonian parameter via measurements of Gibbs thermal states with a known temperature. The…
Key Issues Review: Useful autonomous quantum machines
José Antonio Marín Guzmán, Paul Erker, Simone Gasparinetti +2
Controlled quantum machines have matured significantly. A natural next step is to increasingly grant them autonomy, freeing them from time-dependent external control. For example,…
Thermally driven quantum refrigerator autonomously resets superconducting qubit
Mohammed Ali Aamir, Paul Jamet Suria, José Antonio Marín Guzmán +4
Although classical thermal machines power industries and modern living, quantum thermal engines have yet to prove their utility. Here, we demonstrate a useful quantum absorption re…
Nonclassical advantage in metrology established via quantum simulations of hypothetical closed timelike curves
David R. M. Arvidsson-Shukur, Aidan G. McConnell, Nicole Yunger Halpern
We construct a metrology experiment in which the metrologist can sometimes amend her input state by simulating a closed timelike curve, a worldline that travels backward in time. T…
Non-Abelian eigenstate thermalization hypothesis
Chaitanya Murthy, Arman Babakhani, Fernando Iniguez +2
The eigenstate thermalization hypothesis (ETH) explains why chaotic quantum many-body systems thermalize internally if the Hamiltonian lacks symmetries. If the Hamiltonian conserve…
Experimentally measuring rolling and sliding in three-dimensional dense granular packings
Zackery A. Benson, Anton Peshkov, Nicole Yunger Halpern +2
We experimentally measure a three-dimensional (3D) granular system's reversibility under cyclic compression. We image the grains using a refractive-index-matched fluid, then analyz…
Linear growth of quantum circuit complexity
Jonas Haferkamp, Philippe Faist, Naga B. T. Kothakonda +2
Quantifying quantum states' complexity is a key problem in various subfields of science, from quantum computing to black-hole physics. We prove a prominent conjecture by Brown and…
How to build Hamiltonians that transport noncommuting charges in quantum thermodynamics
Nicole Yunger Halpern, Shayan Majidy
Noncommuting conserved quantities have recently launched a subfield of quantum thermodynamics. In conventional thermodynamics, a system of interest and an environment exchange quan…
Learning about learning by many-body systems
Weishun Zhong, Jacob M. Gold, Sarah Marzen +2
Diverse many-body systems, from soap bubbles to suspensions to polymers, learn and remember patterns in the drives that push them far from equilibrium. This learning may be leverag…
Nonlinear Bell inequality for macroscopic measurements
Adam Bene Watts, Nicole Yunger Halpern, Aram Harrow
The correspondence principle suggests that quantum systems grow classical when large. Classical systems cannot violate Bell inequalities. Yet agents given substantial control can v…
Noncommuting conserved quantities in quantum many-body thermalization
Nicole Yunger Halpern, Michael E. Beverland, Amir Kalev
In statistical mechanics, a small system exchanges conserved quantities---heat, particles, electric charge, etc.---with a bath. The small system thermalizes to the canonical ensemb…
Fundamental limitations on photoisomerization from thermodynamic resource theories
Nicole Yunger Halpern, David T. Limmer
Small, out-of-equilibrium, and quantum systems defy simple thermodynamic expressions. Such systems are exemplified by molecular switches, which exchange heat with a bath. These mol…
Out-of-Time-Ordered-Correlator Quasiprobabilities Robustly Witness Scrambling
José Raúl González Alonso, Nicole Yunger Halpern, Justin Dressel
Out-of-time-ordered correlators (OTOCs) have received considerable recent attention as qualitative witnesses of information scrambling in many-body quantum systems. Theoretical dis…
Entropic uncertainty relations for quantum information scrambling
Nicole Yunger Halpern, Anthony Bartolotta, Jason Pollack
How violently do two quantum operators disagree? Different fields of physics feature different measures of incompatibility: (i) In quantum information theory, entropic uncertainty…
Resilience of scrambling measurements
Brian Swingle, Nicole Yunger Halpern
Most experimental protocols for measuring scrambling require time evolution with a Hamiltonian and with the Hamiltonian's negative counterpart (backwards time evolution). Engineeri…
MBL-mobile: Quantum engine based on many-body localization
Nicole Yunger Halpern, Christopher David White, Sarang Gopalakrishnan +1
Many-body-localized (MBL) systems do not thermalize under their intrinsic dynamics. The athermality of MBL, we propose, can be harnessed for thermodynamic tasks. We illustrate this…
Number of trials required to estimate a free-energy difference, using fluctuation relations
Nicole Yunger Halpern, Christopher Jarzynski
The difference Delta F between free energies has applications in biology, chemistry, and pharmacology. The value of Delta F can be estimated from experiments or simulations, via fl…
Microcanonical and resource-theoretic derivations of the thermal state of a quantum system with noncommuting charges
Nicole Yunger Halpern, Philippe Faist, Jonathan Oppenheim +1
The grand canonical ensemble lies at the core of quantum and classical statistical mechanics. A small system thermalizes to this ensemble while exchanging heat and particles with a…
Maximum one-shot dissipated work from Renyi divergences
Nicole Yunger Halpern, Andrew J. P. Garner, Oscar C. O. Dahlsten +1
Thermodynamics describes large-scale, slowly evolving systems. Two modern approaches generalize thermodynamics: fluctuation theorems, which concern finite-time nonequilibrium proce…