493 citations · 1.4k across the 17 of their papers we have counts for
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Approximate Quantum Codes From Long Wormholes
Gregory Bentsen, Phuc Nguyen, Brian Swingle
We discuss families of approximate quantum error correcting codes which arise as the nearly-degenerate ground states of certain quantum many-body Hamiltonians composed of non-commu…
Onset of scrambling as a dynamical transition in tunable-range quantum circuits
Sridevi Kuriyattil, Tomohiro Hashizume, Gregory Bentsen +1
In a fast scrambling many-body quantum system, information is spread and entanglement is built up on a timescale that grows logarithmically with the system size. This is of fundame…
Linear Growth of Circuit Complexity from Brownian Dynamics
Shao-Kai Jian, Gregory Bentsen, Brian Swingle
We calculate the frame potential for Brownian clusters of spins or fermions with time-dependent all-to-all interactions. In both cases the problem can be mapped to an effective…
Tunable Geometries in Sparse Clifford Circuits
Tomohiro Hashizume, Sridevi Kuriyattil, Andrew J. Daley +1
We investigate the emergence of different effective geometries in stochastic Clifford circuits with sparse coupling. By changing the probability distribution for choosing two-site…
Measurement-induced phase transitions in sparse nonlocal scramblers
Tomohiro Hashizume, Gregory Bentsen, Andrew J. Daley
Measurement-induced phase transitions arise due to a competition between the scrambling of quantum information in a many-body system and local measurements. In this work we investi…
Entanglement Phases in large-N hybrid Brownian circuits with long-range couplings
Subhayan Sahu, Shao-Kai Jian, Gregory Bentsen +1
We develop solvable models of large- hybrid quantum circuits on qubits and fermions with long-range power-law interactions and continuous local monitoring, which provide analyti…
Measurement-induced purification in large-N hybrid Brownian circuits
Gregory Bentsen, Subhayan Sahu, Brian Swingle
Competition between unitary dynamics that scrambles quantum information non-locally and local measurements that probe and collapse the quantum state can result in a measurement-ind…
Deterministic Fast Scrambling with Neutral Atom Arrays
Tomohiro Hashizume, Gregory Bentsen, Sebastian Weber +1
Fast scramblers are dynamical quantum systems that produce many-body entanglement on a timescale that grows logarithmically with the system size . We propose and investigate a f…
Protecting Spin Coherence in a Tunable Heisenberg Model
Emily J. Davis, Avikar Periwal, Eric S. Cooper +4
Using an ensemble of atoms in an optical cavity, we engineer a family of nonlocal Heisenberg Hamiltonians with continuously tunable anisotropy of the spin-spin couplings. We thus g…
Treelike interactions and fast scrambling with cold atoms
Gregory Bentsen, Tomohiro Hashizume, Anton S. Buyskikh +4
We propose an experimentally realizable quantum spin model that exhibits fast scrambling, based on non-local interactions which couple sites whose separation is a power of 2. By co…
Photon-Mediated Spin-Exchange Dynamics of Spin-1 Atoms
Emily J. Davis, Gregory Bentsen, Lukas Homeier +2
We report direct observations of photon-mediated spin-exchange interactions in an atomic ensemble. Interactions extending over a distance of 500 microns are generated within a clou…
One- and two-axis squeezing of atomic ensembles in optical cavities
Johannes Borregaard, Emily D. Davis, Greg S. Bentsen +2
The strong light-matter coupling attainable in optical cavities enables the generation of highly squeezed states of atomic ensembles. It was shown in [Phys. Rev. A 66, 022314 (2002…
Measuring the scrambling of quantum information
Brian Swingle, Gregory Bentsen, Monika Schleier-Smith +1
We provide a protocol to measure out-of-time-order correlation functions. These correlation functions are of theoretical interest for diagnosing the scrambling of quantum informati…
Approaching the Heisenberg limit without single-particle detection
Emily Davis, Gregory Bentsen, Monika Schleier-Smith
We propose an approach to quantum phase estimation that can attain precision near the Heisenberg limit without requiring single-particle-resolved state detection. We show that the…