The essence of the DTC phase is an emergent, colle
Post# of 22465
Posted On: 10/27/2016 12:53:47 PM
The essence of the DTC phase is an emergent, collective, subharmonic temporal response11. While this phenomenon resembles the coherent revivals associated with dynamical decoupling14, its nature is fundamentally different as it is induced and protected by interactions rather than fine-tuned control fields.
A number of remarkable phenomena in quantum dynamics have recently been observed in engineered manybody systems consisting of ten to a few hundred particles3–6,33. Our present observations indicate that robust DTC order can occur in large systems without fine-tuned interactions and disorder, even in the regime where localization is nominally not expected to occur. Beyond raising important questions about the role of localization and long-range interactions in studies of driven systems, our work opens up several new avenues for fundamental studies and potential applications
Observation of discrete time-crystalline order in a disordered dipolar many-body system
Soonwon Choi, Joonhee Choi, Renate Landig, Georg Kucsko, Hengyun Zhou, Junichi Isoya, Fedor Jelezko, Shinobu Onoda, Hitoshi Sumiya, Vedika Khemani, Curt von Keyserlingk, Norman Y. Yao, Eugene Demler, Mikhail D. Lukin
(Submitted on 25 Oct 2016)
Understanding quantum dynamics away from equilibrium is an outstanding challenge in the modern physical sciences. It is well known that out-of-equilibrium systems can display a rich array of phenomena, ranging from self-organized synchronization to dynamical phase transitions. More recently, advances in the controlled manipulation of isolated many-body systems have enabled detailed studies of non-equilibrium phases in strongly interacting quantum matter. As a particularly striking example, the interplay of periodic driving, disorder, and strong interactions has recently been predicted to result in exotic "time-crystalline" phases, which spontaneously break the discrete time-translation symmetry of the underlying drive. Here, we report the experimental observation of such discrete time-crystalline order in a driven, disordered ensemble of
∼
10
6
dipolar spin impurities in diamond at room-temperature. We observe long-lived temporal correlations at integer multiples of the fundamental driving period, experimentally identify the phase boundary and find that the temporal order is protected by strong interactions; this order is remarkably stable against perturbations, even in the presence of slow thermalization. Our work opens the door to exploring dynamical phases of matter and controlling interacting, disordered many-body systems.
https://arxiv.org/abs/1610.08057
Truly next level
A number of remarkable phenomena in quantum dynamics have recently been observed in engineered manybody systems consisting of ten to a few hundred particles3–6,33. Our present observations indicate that robust DTC order can occur in large systems without fine-tuned interactions and disorder, even in the regime where localization is nominally not expected to occur. Beyond raising important questions about the role of localization and long-range interactions in studies of driven systems, our work opens up several new avenues for fundamental studies and potential applications
Observation of discrete time-crystalline order in a disordered dipolar many-body system
Soonwon Choi, Joonhee Choi, Renate Landig, Georg Kucsko, Hengyun Zhou, Junichi Isoya, Fedor Jelezko, Shinobu Onoda, Hitoshi Sumiya, Vedika Khemani, Curt von Keyserlingk, Norman Y. Yao, Eugene Demler, Mikhail D. Lukin
(Submitted on 25 Oct 2016)
Understanding quantum dynamics away from equilibrium is an outstanding challenge in the modern physical sciences. It is well known that out-of-equilibrium systems can display a rich array of phenomena, ranging from self-organized synchronization to dynamical phase transitions. More recently, advances in the controlled manipulation of isolated many-body systems have enabled detailed studies of non-equilibrium phases in strongly interacting quantum matter. As a particularly striking example, the interplay of periodic driving, disorder, and strong interactions has recently been predicted to result in exotic "time-crystalline" phases, which spontaneously break the discrete time-translation symmetry of the underlying drive. Here, we report the experimental observation of such discrete time-crystalline order in a driven, disordered ensemble of
∼
10
6
dipolar spin impurities in diamond at room-temperature. We observe long-lived temporal correlations at integer multiples of the fundamental driving period, experimentally identify the phase boundary and find that the temporal order is protected by strong interactions; this order is remarkably stable against perturbations, even in the presence of slow thermalization. Our work opens the door to exploring dynamical phases of matter and controlling interacting, disordered many-body systems.
https://arxiv.org/abs/1610.08057
Truly next level
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