Reservoir Engineering using Quantum Optimal Control for Qubit Reset
arXiv:1903.05059 · doi:10.1088/1367-2630/ab41ad
Abstract
We determine how to optimally reset a superconducting qubit which interacts with a thermal environment in such a way that the coupling strength is tunable. Describing the system in terms of a time-local master equation with time-dependent decay rates and using quantum optimal control theory, we identify temporal shapes of tunable level splittings which maximize the efficiency of the reset protocol in terms of duration and error. Time-dependent level splittings imply a modification of the system-environment coupling, varying the decay rates as well as the Lindblad operators. Our approach thus demonstrates efficient reservoir engineering employing quantum optimal control. We find the optimized reset strategy to consist in maximizing the decay rate from one state and driving non-adiabatic population transfer into this strongly decaying state.
11 pages, 5 figures
References in corpus (33)
- Introduction to Quantum Noise, Measurement and Amplification
- Quantum Non-Markovianity: Characterization, Quantification and Detection
- Training Schrödinger's cat: quantum optimal control
- Preparation of Entangled States by Quantum Markov Processes
- Dynamically protected cat-qubits: a new paradigm for universal quantum computation
- Building logical qubits in a superconducting quantum computing system
- 1/f noise: implications for solid-state quantum information
- Entanglement generated by dissipation and steady state entanglement of two macroscopic objects
- Dissipative production of a maximally entangled steady state
- Chopped random-basis quantum optimization
- Optimal control theory for unitary transformations
- Controlling open quantum systems: Tools, achievements, and limitations
- Quantum harmonic oscillator state synthesis by reservoir engineering
- Fast and Unconditional All-Microwave Reset of a Superconducting Qubit
- Monotonically convergent optimization in quantum control using Krotov's method
- Optimal control of a qubit coupled to a non-Markovian environment
- Optimal control of open quantum systems: cooperative effects of driving and dissipation
- Stabilizing entanglement via symmetry-selective bath engineering in superconducting qubits
- Quantum Circuit Refrigerator
- Exploiting Non-Markovianity of the Environment for Quantum Control
- Steady state entanglement of two superconducting qubits engineered by dissipation
- Storage and on-demand release of microwaves using superconducting resonators with tunable coupling
- Heat-Bath Algorithmic Cooling with correlated qubit-environment interactions
- Steering the optimization pathway in the control landscape using constraints
- Resonator reset in circuit QED by optimal control for large open quantum systems
- Observation of a broadband Lamb shift in an engineered quantum system
- Beating the limits with initial correlations
- Correlation-Enhanced Algorithmic Cooling
- Optimal control under spectral constraints: Enforcing multi-photon absorption pathways
- Time-optimal purification of a qubit in contact with a structured environment
- Quantum optimal control of the dissipative production of a maximally entangled state
- Cooling molecular vibrations with shaped laser pulses: Optimal control theory exploiting the timescale separation between coherent excitation and spontaneous emission
- A tunable quantum dissipator for active resonator reset in circuit QED
Cited by in corpus (26)
- Introduction to Theoretical and Experimental aspects of Quantum Optimal Control
- Krotov Method for Optimal Control in Closed Quantum Systems
- Engineering dissipation with resistive elements in circuit quantum electrodynamics
- Fast Route to Thermalization
- Fast control of dissipation in a superconducting resonator
- Optimal State Manipulation for a Two-Qubit System Driven by Coherent and Incoherent Controls
- Accelerating Quantum Relaxation via Temporary Reset: A Mpemba-Inspired Approach
- Initial experimental results on a superconducting-qubit reset based on photon-assisted quasiparticle tunneling
- Robust quantum control with disorder-dressed evolution
- Fast, high precision dynamics in quantum optimal control theory
- Optimal control in large open quantum systems: the case of transmon readout and reset
- Trajectory tracking for non-Markovian quantum systems
- Approximations in transmon simulation
- Many-excitation removal of a transmon qubit using a single-junction quantum-circuit refrigerator and a two-tone microwave drive
- Three qubits in less than three baths: Beyond two-body system-bath interactions in quantum refrigerators
- Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe
- Unifying methods for optimal control in non-Markovian quantum systems via process tensors
- Control landscapes for high-fidelity generation of C-NOT and C-PHASE gates with coherent and environmental driving
- Enhancing qubit readout with Bayesian Learning
- Pulsed multireservoir engineering for a trapped ion with applications to state synthesis and quantum Otto cycles
- Optimizing resetting of superconducting qubits
- External control of qubit-photon interaction and multi-qubit reset in a dissipative quantum network
- Interacting electrons in a flat-band system within the Generalized Kadanoff-Baym Ansatz
- Quantum speed limits for an open system in contact with a thermal bath
- Quantum Optimal Control for Pure-State Preparation Using One Initial State
- Coherent dynamical control of quantum processes