Enhancement of quantum heat engine by encircling a Liouvillian exceptional point
arXiv:2302.13450 · doi:10.1103/PhysRevLett.130.110402
Abstract
Quantum heat engines are expected to outperform the classical counterparts due to quantum coherences involved. Here we experimentally execute a single-ion quantum heat engine and demonstrate, for the first time, the dynamics and the enhanced performance of the heat engine originating from the Liouvillian exceptional points (LEPs). In addition to the topological effects related to LEPs, we focus on thermodynamic effects, which can be understood by the Landau-Zener-Stuckelberg process under decoherence. We witness a positive net work from the quantum heat engine if the heat engine cycle dynamically encircles an LEP. Further investigation reveals that, a larger net work is done when the system is operated closer to the LEP. We attribute the enhanced performance of the quantum heat engine to the LZS process, enabled by the eigenenergy landscape in the vicinity of the LEP, and the EP-induced topological transition. Therefore, our results open new possibilities to towards LEP-enabled control of quantum heat engines and of thermodynamic processes in open quantum systems.
7 pages, 3 figures, Supplementary materials can be found in the Download source
References in corpus (19)
- Loss-induced suppression and revival of lasing
- Quantum Thermodynamic Cycles and quantum heat engines
- Quantum exceptional points of non-Hermitian Hamiltonians and Liouvillians: The effects of quantum jumps
- Non-Hermitian Ring Laser Gyroscopes with Enhanced Sagnac Sensitivity
- Quantum jumps in the non-Hermitian dynamics of a superconducting qubit
- Chiral Coherent Perfect Absorption on Exceptional Surfaces
- Dynamically encircling an exceptional point in a real quantum system
- An all-optical nanomechanical heat engine
- Decoherence Induced Exceptional Points in a Dissipative Superconducting Qubit
- Non-Hermitian engineering of terahertz light using exceptional points in electrically tuneable collective light-matter interactions
- Analog of a quantum heat engine using a single-spin qubit
- A spin based heat engine: demonstration of multiple rounds of algorithmic cooling
- Topological quantum state control through exceptional-point proximity
- Signatures of Liouvillian exceptional points in a quantum thermal machine
- Quantum heat engine in the relativistic limit: The case of a Dirac particle
- Role of quantum correlations in light-matter quantum heat engines
- Emergence of PT-symmetry breaking in open quantum systems
- phase transition in open quantum systems with Lindblad dynamics
- A Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator
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- Observation of quantum strong Mpemba effect
- Non-Markovian Quantum Exceptional Points
- Encircling the Liouvillian exceptional points: a brief review
- Experimental Liouvillian exceptional points in a quantum system without Hamiltonian singularities
- Chiral Bell-state transfer via dissipative Liouvillian dynamics
- Thermodynamic engine with a quantum degenerate working fluid
- Parametrically driving a quantum oscillator into exceptionality
- Chiral quantum heating and cooling with an optically controlled ion
- The effect of thermal photons on exceptional points in coupled resonators
- Experimental observation of non-Markovian quantum exceptional points
- Quantum tomography of a third-order exceptional point in a dissipative trapped ion
- Liouvillian and Hamiltonian exceptional points of atomic vapors: The spectral signatures of quantum jumps
- Quantum Carnot thermal machines re-examined: Definition of efficiency and the effects of strong coupling
- Liouvillian exceptional points of an open driven two-level system
- Unbalanced gain and loss in a quantum photonic system
- Phase Transitions and Virtual Exceptional Points in Quantum Emitters Coupled to Dissipative Baths
- Braids and Higher-order Exceptional Points from the Interplay Between Lossy Defects and Topological Boundary States
- Entanglement signatures for quantum synchronization with single-ion phonon laser
- Transfer learning from Hermitian to non-Hermitian quantum many-body physics
- Emergent Liouvillian exceptional points from exact principles
- Chiral and non-chiral swift mode conversion near an exception point with dynamic adiabaticity engineering
- Asymptotic Exceptional Steady States in Dissipative Dynamics
- A Finite-Time Quantum Otto Engine subject to Control Noise and Enhancement Techniques
- Spin-mechanical thermal machines
- Dynamic manifestation of exception points in a non-Hermitian continuous model with an imaginary periodic potential
- Exceptional point in self-consistent Markovian master equations
- Non-Hermitian topology in a single driven-dissipative Kerr-Cat qubit