Irreversible quantum evolution with quadratic generator: Review
- URL: http://arxiv.org/abs/1912.13083v2
- Date: Sat, 25 Jan 2020 11:10:00 GMT
- Title: Irreversible quantum evolution with quadratic generator: Review
- Authors: A.E. Teretenkov
- Abstract summary: We review results on GKSL-type equations with multi-modal generators which are quadratic in bosonic or fermionic creation and operators.
The Gaussian solutions are obtained in terms of equations for the first and the second moments.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We review results on GKSL-type equations with multi-modal generators which
are quadratic in bosonic or fermionic creation and annihilation operators.
General forms of such equations are presented. The Gaussian solutions are
obtained in terms of equations for the first and the second moments. Different
approaches for their solutions are discussed.
Related papers
- Quantum Circuits for the heat equation with physical boundary conditions via Schrodingerisation [33.76659022113328]
This paper explores the explicit design of quantum circuits for quantum simulation of partial differential equations (PDEs) with physical boundary conditions.
We present two methods for handling the inhomogeneous terms arising from time-dependent physical boundary conditions.
We then apply the quantum simulation technique from [CJL23] to transform the resulting non-autonomous system to an autonomous system in one higher dimension.
arXiv Detail & Related papers (2024-07-22T03:52:14Z) - Relativistic exponential-type spinor orbitals and their use in many-electron Dirac equation solution [0.0]
Dirac-Coulomb type differential equation and its solution relativistic exponential-type spinor orbitals are introduced.
A new formulation for relativistic auxiliary functions that improve the efficiency in Coulomb energy calculations is presented.
arXiv Detail & Related papers (2024-03-23T20:48:54Z) - Free expansion of a Gaussian wavepacket using operator manipulations [77.34726150561087]
The free expansion of a Gaussian wavepacket is a problem commonly discussed in undergraduate quantum classes.
We provide an alternative way to calculate the free expansion by recognizing that the Gaussian wavepacket can be thought of as the ground state of a harmonic oscillator.
As quantum instruction evolves to include more quantum information science applications, reworking this well known problem using a squeezing formalism will help students develop intuition for how squeezed states are used in quantum sensing.
arXiv Detail & Related papers (2023-04-28T19:20:52Z) - Quantum simulation of partial differential equations via
Schrodingerisation: technical details [31.986350313948435]
We study a new method - called Schrodingerisation introduced in [Jin, Liu, Yu, arXiv: 2212.13969] - for solving general linear partial differential equations with quantum simulation.
This method converts linear partial differential equations into a Schrodingerised' or Hamiltonian system, using a new and simple transformation called the warped phase transformation.
We apply this to more examples of partial differential equations, including heat, convection, Fokker-Planck, linear Boltzmann and Black-Scholes equations.
arXiv Detail & Related papers (2022-12-30T13:47:35Z) - Time complexity analysis of quantum algorithms via linear
representations for nonlinear ordinary and partial differential equations [31.986350313948435]
We construct quantum algorithms to compute the solution and/or physical observables of nonlinear ordinary differential equations.
We compare the quantum linear systems algorithms based methods and the quantum simulation methods arising from different numerical approximations.
arXiv Detail & Related papers (2022-09-18T05:50:23Z) - Quantum-based solution of time-dependent complex Riccati equations [0.0]
We show a time-dependent complex Riccati equation (TDCRE) as the solution of the time evolution operator (TEO) of quantum systems.
The inherited symmetries of quantum systems can be recognized by a simple inspection of the TDCRE.
As an application, but also as a consistency test, we compare our solution with the analytic one for the Bloch-Riccati equation.
arXiv Detail & Related papers (2022-09-07T23:52:04Z) - Higher order moments dynamics for some multimode quantum master
equations [0.0]
We derive Heisenberg equations for arbitrary high order moments of creation and annihilation operators.
We also derive similar equations for the case of the quantum master equation.
arXiv Detail & Related papers (2022-04-05T21:47:50Z) - Mixed-Integer Programming Using a Bosonic Quantum Computer [0.0]
We propose a scheme for solving mixed-integer programming problems in which the optimization problem is translated to a ground-state preparation problem on a bosonic quantum field modes (qumodes)
We show numerical demonstrations by a circuit-based optical quantum computer with each individual qumode prepared.
arXiv Detail & Related papers (2021-12-27T22:01:05Z) - Hidden Convexity of Wasserstein GANs: Interpretable Generative Models
with Closed-Form Solutions [31.952858521063277]
We analyze the impact of Wasserstein GANs with two-layer neural network discriminators through the lens of convex duality.
We further demonstrate the power of different activation functions of discriminator.
arXiv Detail & Related papers (2021-07-12T18:33:49Z) - Unification of massless field equations solutions for any spin [0.0]
A unification of Klein--Gordon, Dirac, Maxwell, Rarita--Schwinger and Einstein equations exact solutions is presented.
The method is based on writing all of the relevant dynamical fields in terms of products and derivatives of pre--potential functions.
arXiv Detail & Related papers (2021-02-02T13:38:28Z) - Dissipative flow equations [62.997667081978825]
We generalize the theory of flow equations to open quantum systems focusing on Lindblad master equations.
We first test our dissipative flow equations on a generic matrix and on a physical problem with a driven-dissipative single fermionic mode.
arXiv Detail & Related papers (2020-07-23T14:47:17Z)
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.