Toward simulation of topological phenomenas with one-, two- and
three-dimensional quantum walks
- URL: http://arxiv.org/abs/2005.08720v2
- Date: Thu, 28 May 2020 13:59:30 GMT
- Title: Toward simulation of topological phenomenas with one-, two- and
three-dimensional quantum walks
- Authors: S. Panahiyan, S. Fritzsche
- Abstract summary: We study the simulation of the topological phases in three subsequent dimensions with quantum walks.
We are mainly focused on the completion of a table for the protocols of the quantum walk.
We highlight the possible boundary states that can be observed for each protocol in different dimensions.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study the simulation of the topological phases in three subsequent
dimensions with quantum walks. We are mainly focused on the completion of a
table for the protocols of the quantum walk that could simulate different
family of the topological phases in one, two dimensions and take the first
initiatives to build necessary protocols for three-dimensional cases. We also
highlight the possible boundary states that can be observed for each protocol
in different dimensions and extract the conditions for their emergences or
absences. To further enrich the simulation of the topological phenomenas, we
include step-dependent coins in the evolution operators of the quantum walks.
Consequently, this leads to step-dependency of the simulated topological
phenomenas and their properties which in turn introduce dynamicality as a
feature to simulated topological phases and boundary states. This dynamicality
provides the step-number of the quantum walk as a mean to control and engineer
the number of topological phases and boundary states, their populations, types
and even occurrences.
Related papers
- Dynamical bulk boundary correspondence and dynamical quantum phase
transitions in higher order topological insulators [0.0]
Dynamical quantum phase transitions occur in quantum systems when non-analyticities occur at critical times in the return rate.
We consider a minimal model which encompasses all possible forms of higher order topology in two dimensional topological band structures.
We find that DQPTs can still occur, and can occur for quenches which cross both bulk and boundary gap closings.
arXiv Detail & Related papers (2023-05-10T15:21:55Z) - Geometric phases along quantum trajectories [58.720142291102135]
We study the distribution function of geometric phases in monitored quantum systems.
For the single trajectory exhibiting no quantum jumps, a topological transition in the phase acquired after a cycle.
For the same parameters, the density matrix does not show any interference.
arXiv Detail & Related papers (2023-01-10T22:05:18Z) - Accessing the topological Mott insulator in cold atom quantum simulators
with realistic Rydberg dressing [58.720142291102135]
We investigate a realistic scenario for the quantum simulation of such systems using cold Rydberg-dressed atoms in optical lattices.
We perform a detailed analysis of the phase diagram at half- and incommensurate fillings, in the mean-field approximation.
We furthermore study the stability of the phases with respect to temperature within the mean-field approximation.
arXiv Detail & Related papers (2022-03-28T14:55:28Z) - Observing a Topological Transition in Weak-Measurement-Induced Geometric
Phases [55.41644538483948]
Weak measurements in particular, through their back-action on the system, may enable various levels of coherent control.
We measure the geometric phases induced by sequences of weak measurements and demonstrate a topological transition in the geometric phase controlled by measurement strength.
Our results open new horizons for measurement-enabled quantum control of many-body topological states.
arXiv Detail & Related papers (2021-02-10T19:00:00Z) - Unraveling the topology of dissipative quantum systems [58.720142291102135]
We discuss topology in dissipative quantum systems from the perspective of quantum trajectories.
We show for a broad family of translation-invariant collapse models that the set of dark state-inducing Hamiltonians imposes a nontrivial topological structure on the space of Hamiltonians.
arXiv Detail & Related papers (2020-07-12T11:26:02Z) - State preparation and measurement in a quantum simulation of the O(3)
sigma model [65.01359242860215]
We show that fixed points of the non-linear O(3) sigma model can be reproduced near a quantum phase transition of a spin model with just two qubits per lattice site.
We apply Trotter methods to obtain results for the complexity of adiabatic ground state preparation in both the weak-coupling and quantum-critical regimes.
We present and analyze a quantum algorithm based on non-unitary randomized simulation methods.
arXiv Detail & Related papers (2020-06-28T23:44:12Z) - Exploring 2D synthetic quantum Hall physics with a quasi-periodically
driven qubit [58.720142291102135]
Quasi-periodically driven quantum systems are predicted to exhibit quantized topological properties.
We experimentally study a synthetic quantum Hall effect with a two-tone drive.
arXiv Detail & Related papers (2020-04-07T15:00:41Z) - Controllable simulation of topological phases and edge states with
quantum walk [0.0]
We show that one-dimensional quantum walk with step-dependent coin simulates all types of topological phases in BDI family.
We also show that step-dependent coins provide the number of steps as a controlling factor over the simulations.
arXiv Detail & Related papers (2020-04-07T11:49:54Z) - Quantum simulation for three-dimensional chiral topological insulator [14.149347360858943]
We show a previously-not-realized three-dimensional (3D) chiral topological insulator, and demonstrate by quantum quenches a complete study of both the bulk and surface topological physics.
This work opens a new avenue of quantum simulation towards for the complete study of topological quantum phases.
arXiv Detail & Related papers (2020-02-26T08:29:07Z) - Experimental Detection of the Quantum Phases of a Three-Dimensional
Topological Insulator on a Spin Quantum Simulator [4.614115414323219]
We investigate the three-dimensional topological insulators in the AIII (chiral unitary) symmetry class.
We experimentally demonstrate their topological properties, where a dynamical quenching approach is adopted.
As a result, the topological invariants are measured with high precision on the band-inversion surface.
arXiv Detail & Related papers (2020-01-15T03:51:48Z)
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.