Chaos-assisted tunneling resonances in a synthetic Floquet superlattice
- URL: http://arxiv.org/abs/2003.10387v1
- Date: Mon, 23 Mar 2020 16:56:11 GMT
- Title: Chaos-assisted tunneling resonances in a synthetic Floquet superlattice
- Authors: M. Arnal, G. Chatelain, M. Martinez, N. Dupont, O. Giraud, D. Ullmo,
B. Georgeot, G. Lemari\'e, J. Billy and D. Gu\'ery-Odelin
- Abstract summary: A quantum chaos transport mechanism called chaos-assisted tunneling provides new possibilities of control for quantum simulation.
We experimentally demonstrate and characterize these resonances for the first time in a quantum system.
This opens the way to new kinds of quantum simulations with long-range transport and new types of control of quantum systems through complexity.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The field of quantum simulation, which aims at using a tunable quantum system
to simulate another, has been developing fast in the past years as an
alternative to the all-purpose quantum computer. In particular, the use of
temporal driving has attracted a huge interest recently as it was shown that
certain fast drivings can create new topological effects, while a strong
driving leads to e.g. Anderson localization physics. In this work, we focus on
the intermediate regime to observe a quantum chaos transport mechanism called
chaos-assisted tunneling which provides new possibilities of control for
quantum simulation. Indeed, this regime generates a rich classical phase space
where stable trajectories form islands surrounded by a large sea of unstable
chaotic orbits. This mimics an effective superlattice for the quantum states
localized in the regular islands, with new controllable tunneling properties.
Besides the standard textbook tunneling through a potential barrier,
chaos-assisted tunneling corresponds to a much richer tunneling process where
the coupling between quantum states located in neighboring regular islands is
mediated by other states spread over the chaotic sea. This process induces
sharp resonances where the tunneling rate varies by orders of magnitude over a
short range of parameters. We experimentally demonstrate and characterize these
resonances for the first time in a quantum system. This opens the way to new
kinds of quantum simulations with long-range transport and new types of control
of quantum systems through complexity.
Related papers
- Tunable Non-Gaussian Mechanical States in a Strongly Coupled Hybrid Quantum System [0.0]
We investigate the generation and control of non-Gaussian motional states in a tripartite hybrid quantum system.<n>We show that this drive protocol, combined with time-independent interaction and frequency configurations, leads to the emergence of highly non-Gaussian quantum states.<n>Our findings underscore the tunability and richness of this hybrid platform, paving the way for advanced quantum state engineering.
arXiv Detail & Related papers (2025-07-24T16:45:54Z) - Magnetic Memory and Hysteresis from Quantum Transitions: Theory and Experiments on Quantum Annealers [0.6990493129893112]
We present a conceptual framework that explains the observed behavior by combining two-level-Zener transitions via a first-order piecewise- propagator with semiclassical domain-wall kinetics.<n>Our framework reproduces the measured densities, loops, shapes, and longitudinal sweep-rate scaling trends observed data from three different D-Wave annealers.<n>These results establish programmable quantum annealers as powerful testbeds for exploring memory-endowed non-equilibrium dynamics in quantumbody systems.
arXiv Detail & Related papers (2025-07-24T04:03:04Z) - Phase transitions, symmetries, and tunneling in Kerr parametric oscillators [37.69303106863453]
We study the onset of ground-state and excited-state quantum phase transitions in KPOs.<n>We identify the critical points associated with quantum phase transitions and analyze their influence on the energy spectrum and tunneling dynamics.<n>Our findings provide insights into the engineering of robust quantum states, quantum dynamics control, and onset of quantum phase transitions with implications for critical quantum sensing.
arXiv Detail & Related papers (2025-04-21T18:00:19Z) - Bath Dynamical Decoupling with a Quantum Channel [44.99833362998488]
We find that bath dynamical decoupling works if and only if the kick is ergodic.
We study in which circumstances CPTP kicks on a mono-partite quantum system induce quantum Zeno dynamics with its Hamiltonian cancelled out.
arXiv Detail & Related papers (2024-09-27T07:47:52Z) - Experimental signatures of Hilbert-space ergodicity: Universal bitstring distributions and applications in noise learning [3.55103790558995]
Recently a strong notion of quantum ergodicity has been proposed, namely that isolated, global quantum states uniformly explore their available state space.<n>Here we observe signatures of this process with an experimental Rydberg quantum simulator and various numerical models.<n>For a closed system, where the environment is a complementary subsystem, we predict and observe a smooth quantum-to-classical transition in that observables progress from large, quantum fluctuations to small, Gaussian fluctuations as the bath size grows.<n>This transition exhibits universal properties on a quantitative level amongst a wide range of systems, including those at finite temperature, those with itinerant particles, and random circuits
arXiv Detail & Related papers (2024-03-18T17:09:05Z) - Hilbert-Space Ergodicity in Driven Quantum Systems: Obstructions and
Designs [0.0]
We study a notion of quantum ergodicity for closed systems with time-dependent Hamiltonians.
We show that statistical pseudo-randomness can already be achieved by a quantum system driven with a single frequency.
arXiv Detail & Related papers (2024-02-09T19:00:00Z) - Engineering Transport via Collisional Noise: a Toolbox for Biology
Systems [44.99833362998488]
We study a generalised XXZ model in the presence of collision noise, which allows to describe environments beyond the standard Markovian formulation.
Results constitute an example of the essential building blocks for the understanding of quantum transport in noisy and warm disordered environments.
arXiv Detail & Related papers (2023-11-15T12:55:28Z) - Dipolar quantum solids emerging in a Hubbard quantum simulator [45.82143101967126]
Long-range and anisotropic interactions promote rich spatial structure in quantum mechanical many-body systems.
We show that novel strongly correlated quantum phases can be realized using long-range dipolar interaction in optical lattices.
This work opens the door to quantum simulations of a wide range of lattice models with long-range and anisotropic interactions.
arXiv Detail & Related papers (2023-06-01T16:49:20Z) - Squeezing oscillations in a multimode bosonic Josephson junction [0.4335300149154109]
We show how to enhance the quantum correlations in a one-dimensional multimode bosonic Josephson junction.
Our work provides new ways for engineering correlations and entanglement in the external degree of freedom of interacting many-body systems.
arXiv Detail & Related papers (2023-04-05T23:29:05Z) - Path Integral for Mixed Tunneling, Polychronic Tunneling and Quantum
Gravity [0.0]
Quantum tunneling in a many-body system is much more non-trivial than that in a one-body system.
Recently, a similar phenomenon, polychronic tunneling, has been proposed in quantum gravity.
arXiv Detail & Related papers (2022-12-13T17:51:26Z) - Quantum emulation of the transient dynamics in the multistate
Landau-Zener model [50.591267188664666]
We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity.
Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
arXiv Detail & Related papers (2022-11-26T15:04:11Z) - Reminiscence of classical chaos in driven transmons [117.851325578242]
We show that even off-resonant drives can cause strong modifications to the structure of the transmon spectrum rendering a large part of it chaotic.
Results lead to a photon number threshold characterizing the appearance of chaos-induced quantum demolition effects.
arXiv Detail & Related papers (2022-07-19T16:04:46Z) - Bistability and chaos-assisted tunneling in the dissipative quantum
systems [0.0]
We revisit the problem of quantum bi- and multi-stability by considering the dissipative Double Resonance Model.
This allows us to address a novel phenomenon of dissipation- and chaos-assisted tunneling between quantum limits cycles.
arXiv Detail & Related papers (2022-04-14T13:15:36Z) - Preparing random states and benchmarking with many-body quantum chaos [48.044162981804526]
We show how to predict and experimentally observe the emergence of random state ensembles naturally under time-independent Hamiltonian dynamics.
The observed random ensembles emerge from projective measurements and are intimately linked to universal correlations built up between subsystems of a larger quantum system.
Our work has implications for understanding randomness in quantum dynamics, and enables applications of this concept in a wider context.
arXiv Detail & Related papers (2021-03-05T08:32:43Z) - Discrete time-crystalline order enabled by quantum many-body scars:
entanglement steering via periodic driving [0.0]
We show that coherent revivals associated with quantum many-body scars can be stabilized by periodic driving.
Our results suggest a route to controlling entanglement in quantum systems by combining periodic driving with many-body scars.
arXiv Detail & Related papers (2021-02-25T20:41:47Z) - Zitterbewegung and Klein-tunneling phenomena for transient quantum waves [77.34726150561087]
We show that the Zitterbewegung effect manifests itself as a series of quantum beats of the particle density in the long-time limit.
We also find a time-domain where the particle density of the point source is governed by the propagation of a main wavefront.
The relative positions of these wavefronts are used to investigate the time-delay of quantum waves in the Klein-tunneling regime.
arXiv Detail & Related papers (2020-03-09T21:27:02Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.