493 citations · 1.4k across the 17 of their papers we have counts for
17 papers
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…
Holographic measurement and bulk teleportation
Stefano Antonini, Gregory Bentsen, ChunJun Cao +3
Holography has taught us that spacetime is emergent and its properties depend on the entanglement structure of the dual theory. In this paper, we describe how changes in the entang…
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…
Integrable and chaotic dynamics of spins coupled to an optical cavity
Gregory Bentsen, Ionut-Dragos Potirniche, Vir B. Bulchandani +5
We show that a class of random all-to-all spin models, realizable in systems of atoms coupled to an optical cavity, gives rise to a rich dynamical phase diagram due to the pairwise…
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…
Fast scrambling on sparse graphs
Gregory Bentsen, Yingfei Gu, Andrew Lucas
Given a quantum many-body system with few-body interactions, how rapidly can quantum information be hidden during time evolution? The fast scrambling conjecture is that the time to…
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…