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Operator growth and spread complexity in open quantum systems
Commonly, the notion of ‘‘quantum chaos’’ refers to the fast scrambling of information throughout complex …
Eoin Carolan, Anthony Kiely, Steve Campbell, Sebastian Deffner
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Conditional quantum thermometry–enhancing precision by measuring less
Taking accurate measurements of the temperature of quantum systems is a challenging task. The mathematical peculiarities of quantum …
Akira Sone, Diogo O. Soares-Pinto, Sebastian Deffner
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Estimation of Hamiltonian parameters from thermal states
We upper bound and lower bound the optimal precision with which one can estimate an unknown Hamiltonian parameter via measurements of …
Luis Pedro García-Pintos, Kishor Bharti, Jacob Bringewatt, Hossein Dehghani, Adam Ehrenberg, Nicole Yunger Halpern, Alexey V. Gorshkov
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Energetic cost for speedy synchronization in non-Hermitian quantum dynamics
Quantum synchronization is crucial for understanding complex dynamics and holds potential applications in quantum computing and …
Maxwell Aifer, Juzar Thingna, Sebastian Deffner
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Information scrambling–a quantum thermodynamic perspective
Recent advances in quantum information science have shed light on the intricate dynamics of quantum many-body systems, for which …
Akram Touil, Sebastian Deffner
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Delay-induced spontaneous dark state generation from two distant excited atoms
We investigate the collective non-Markovian dynamics of two fully excited two-level atoms coupled to a one-dimensional waveguide in the …
William Alvarez-Giron, Pablo Solano, Kanu Sinha, Pablo Barberis-Blostein
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First passage times for continuous quantum measurement currents
The First Passage Time (FPT) is the time taken for a stochastic process to reach a desired threshold. It finds wide application in …
Michael J. Kewming, Anthony Kiely, Steve Campbell, Gabriel T. Landi
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Multiparameter critical quantum metrology with impurity probes
Quantum systems can be used as probes in the context of metrology for enhanced parameter estimation. In particular, the delicacy of …
George Mihailescu, Abolfazl Bayat, Steve Campbell, Andrew K. Mitchell
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Fluctuation-induced forces on nanospheres in external fields
We analyze the radiative forces between two dielectric nanospheres mediated via the quantum and thermal fluctuations of the …
Clemens Jakubec, Pablo Solano, Uroš Delić, Kanu Sinha
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Quantum information scrambling in two-dimensional Bose-Hubbard lattices
It is a well-understood fact that the transport of excitations throughout a lattice is intimately governed by the underlying …
Devjyoti Tripathy, Akram Touil, Bartłomiej Gardas, Sebastian Deffner
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