373 citations · 1.6k across the 31 of their papers we have counts for
28 papers · 1 filter
Quantum metrology enhanced by effective time reversal
Yu-Xin Wang, Flavio Salvati, David R. M. Arvidsson-Shukur +3
Quantum metrology involves the application of quantum resources to enhance measurements. Several communities have developed quantum-metrology strategies that leverage effective tim…
Bosonic statistics enhance Maxwell's demon in photonic experiment
Malaquias Correa Anguita, Sara Marzban, William F. Braasch +4
Maxwell's demon elucidates the value of information in thermodynamics, using measurement and feedback: he evolves an equilibrated gas into a nonequilibrium state, from which one mi…
Proposals for experimentally realizing quantum-autonomous gates
José Antonio Marín Guzmán, Yu-Xin Wang, Tom Manovitz +4
Autonomous quantum machines (AQMs) execute tasks without requiring time-dependent external control. Motivations for AQMs include the restrictions imposed by classical control on qu…
Superconducting-antiqubit simulation enables optimal phase estimation via unitary inversion
Xingrui Song, Surihan Sean Borjigin, Flavio Salvati +4
A positron is equivalent to an electron traveling backward through time. Casting transmon superconducting qubits as akin to electrons, we simulate a positron with a transmon subjec…
Roadmap on Quantum Thermodynamics
Steve Campbell, Irene D'Amico, Mario A. Ciampini +66
The last two decades has seen quantum thermodynamics become a well established field of research in its own right. In that time, it has demonstrated a remarkably broad applicabilit…
Work and heat exchanged during sudden quenches of strongly coupled quantum systems
Zohreh Davoudi, Christopher Jarzynski, Niklas Mueller +3
How should one define thermodynamic quantities (internal energy, work, heat, etc.) for quantum systems coupled to their environments strongly? We examine three (classically equival…
Numerical evidence for the non-Abelian eigenstate thermalization hypothesis
Aleksander Lasek, Jae Dong Noh, Jade LeSchack +1
The eigenstate thermalization hypothesis (ETH) explains how generic quantum many-body systems thermalize internally. It implies that local operators' time-averaged expectation valu…
Properties and Applications of the Kirkwood-Dirac Distribution
David R. M. Arvidsson-Shukur, William F. Braasch, Stephan De Bievre +6
Recent years have seen the Kirkwood-Dirac (KD) distribution come to the forefront as a powerful quasi-probability distribution for analysing quantum mechanics. The KD distribution…
Noncommuting conserved charges in quantum thermodynamics and beyond
Shayan Majidy, William F. Braasch, Aleksander Lasek +3
Thermodynamic systems typically conserve quantities ("charges") such as energy and particle number. The charges are often assumed implicitly to commute with each other. Yet quantum…
Non-Abelian transport distinguishes three usually equivalent notions of entropy production
Twesh Upadhyaya, William F. Braasch, Gabriel T. Landi +1
We extend entropy production to a deeply quantum regime involving noncommuting conserved quantities. Consider a unitary transporting conserved quantities ("charges") between two sy…
Critical phase and spin sharpening in SU(2)-symmetric monitored quantum circuits
Shayan Majidy, Utkarsh Agrawal, Sarang Gopalakrishnan +3
Monitored quantum circuits exhibit entanglement transitions at certain measurement rates. Such a transition separates phases characterized by how much information an observer can l…
Non-Abelian symmetry can increase entanglement entropy
Shayan Majidy, Aleksander Lasek, David A. Huse +1
The pillars of quantum theory include entanglement and operators' failure to commute. The Page curve quantifies the bipartite entanglement of a many-body system in a random pure st…
Experimental observation of thermalization with noncommuting charges
Florian Kranzl, Aleksander Lasek, Manoj K. Joshi +4
Quantum simulators have recently enabled experimental observations of quantum many-body systems' internal thermalization. Often, the global energy and particle number are conserved…
Negative quasiprobabilities enhance phase estimation in quantum-optics experiment
Noah B. Lupu-Gladstein, Batuhan Y. Yilmaz, David R. M. Arvidsson-Shukur +4
Operator noncommutation, a hallmark of quantum theory, limits measurement precision, according to uncertainty principles. Wielded correctly, though, noncommutation can boost precis…
Resource theory of quantum uncomplexity
Nicole Yunger Halpern, Naga B. T. Kothakonda, Jonas Haferkamp +3
Quantum complexity is emerging as a key property of many-body systems, including black holes, topological materials, and early quantum computers. A state's complexity quantifies th…
Conditions tighter than noncommutation needed for nonclassicality
David R. M. Arvidsson-Shukur, Jacob Chevalier Drori, Nicole Yunger Halpern
Kirkwood discovered in 1933, and Dirac discovered in 1945, a representation of quantum states that has undergone a renaissance recently. The Kirkwood-Dirac (KD) distribution has be…
Entangled quantum cellular automata, physical complexity, and Goldilocks rules
Logan E. Hillberry, Matthew T. Jones, David L. Vargas +6
Cellular automata are interacting classical bits that display diverse emergent behaviors, from fractals to random-number generators to Turing-complete computation. We discover that…
Quantum Advantage in Postselected Metrology
David R. M. Arvidsson-Shukur, Nicole Yunger Halpern, Hugo V. Lepage +3
We show that postselection offers a nonclassical advantage in metrology. In every parameter-estimation experiment, the final measurement or the postprocessing incurs some cost. Pos…
Quantum steampunk: Quantum information, thermodynamics, their intersection, and applications thereof across physics
Nicole Yunger Halpern
Combining quantum information theory with thermodynamics unites 21st-century technology with 19th-century principles. The union elucidates the spread of information, the flow of ti…
Strengthening weak measurements of qubit out-of-time-order correlators
Justin Dressel, José Raúl González Alonso, Mordecai Waegell +1
For systems of controllable qubits, we provide a method for experimentally obtaining a useful class of multitime correlators using sequential generalized measurements of arbitrary…
Quantum information in the Posner model of quantum cognition
Nicole Yunger Halpern, Elizabeth Crosson
Matthew Fisher recently postulated a mechanism by which quantum phenomena could influence cognition: Phosphorus nuclear spins may resist decoherence for long times, especially when…
The quasiprobability behind the out-of-time-ordered correlator
Nicole Yunger Halpern, Brian Swingle, Justin Dressel
Two topics, evolving rapidly in separate fields, were combined recently: The out-of-time-ordered correlator (OTOC) signals quantum-information scrambling in many-body systems. The…
Jarzynski-like equality for the out-of-time-ordered correlator
Nicole Yunger Halpern
The out-of-time-ordered correlator (OTOC) diagnoses quantum chaos and the scrambling of quantum information via the spread of entanglement. The OTOC encodes forward and reverse evo…
Toward physical realizations of thermodynamic resource theories
Nicole Yunger Halpern
Conventional statistical mechanics describes large systems and averages over many particles or over many trials. But work, heat, and entropy impact the small scales that experiment…