Controlling many-body dynamics with driven quantum scars in Rydberg atom
arrays
- URL: http://arxiv.org/abs/2012.12276v1
- Date: Tue, 22 Dec 2020 19:00:02 GMT
- Title: Controlling many-body dynamics with driven quantum scars in Rydberg atom
arrays
- Authors: Dolev Bluvstein, Ahmed Omran, Harry Levine, Alexander Keesling, Giulia
Semeghini, Sepehr Ebadi, Tout T. Wang, Alexios A. Michailidis, Nishad
Maskara, Wen Wei Ho, Soonwon Choi, Maksym Serbyn, Markus Greiner, Vladan
Vuletic, Mikhail D. Lukin
- Abstract summary: We experimentally investigate non-equilibrium dynamics following rapid quenches in a many-body system composed of 3 to 200 strongly interacting qubits in one and two spatial dimensions.
We discover that scar revivals can be stabilized by periodic driving, which generates a robust subharmonic response akin to discrete time-crystalline order.
- Score: 41.74498230885008
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Controlling non-equilibrium quantum dynamics in many-body systems is an
outstanding challenge as interactions typically lead to thermalization and a
chaotic spreading throughout Hilbert space. We experimentally investigate
non-equilibrium dynamics following rapid quenches in a many-body system
composed of 3 to 200 strongly interacting qubits in one and two spatial
dimensions. Using a programmable quantum simulator based on Rydberg atom
arrays, we probe coherent revivals corresponding to quantum many-body scars.
Remarkably, we discover that scar revivals can be stabilized by periodic
driving, which generates a robust subharmonic response akin to discrete
time-crystalline order. We map Hilbert space dynamics, geometry dependence,
phase diagrams, and system-size dependence of this emergent phenomenon,
demonstrating novel ways to steer entanglement dynamics in many-body systems
and enabling potential applications in quantum information science.
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