Resonator reset in circuit QED by optimal control for large open quantum systems
arXiv:1609.03170 · doi:10.1103/PhysRevA.96.042315
Abstract
We study an implementation of the open GRAPE (Gradient Ascent Pulse Engineering) algorithm well suited for large open quantum systems. While typical implementations of optimal control algorithms for open quantum systems rely on explicit matrix exponential calculations, our implementation avoids these operations leading to a polynomial speed-up of the open GRAPE algorithm in cases of interest. This speed-up, as well as the reduced memory requirements of our implementation, are illustrated by comparison to a standard implementation of open GRAPE. As a practical example, we apply this open-system optimization method to active reset of a readout resonator in circuit QED. In this problem, the shape of a microwave pulse is optimized such as to empty the cavity from measurement photons as fast as possible. Using our open GRAPE implementation, we obtain pulse shapes leading to a reset time over four times faster than passive reset.
11 pages, 6 figures
References in corpus (24)
- Surface codes: Towards practical large-scale quantum computation
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- Simple pulses for elimination of leakage in weakly nonlinear qubits
- Superconducting qubit in waveguide cavity with coherence time approaching 0.1ms
- Detecting arbitrary quantum errors via stabilizer measurements on a sublattice of the surface code
- Quantum speed limit for physical processes
- Controlling the spontaneous emission of a superconducting transmon qubit
- Quantum speed limits in open system dynamics
- Black-box superconducting circuit quantization
- Engineering the quantum states of light in a Kerr-nonlinear resonator by two-photon driving
- Dispersive regime of circuit QED: photon-dependent qubit dephasing and relaxation rates
- Controlling open quantum systems: Tools, achievements, and limitations
- Josephson junction-embedded transmission-line resonators: from Kerr medium to in-line transmon
- Photon Shot Noise Dephasing in the Strong-Dispersive Limit of Circuit QED
- Machine learning for discriminating quantum measurement trajectories and improving readout
- Improved Superconducting Qubit Readout by Qubit-Induced Nonlinearities
- Microwave potentials and optimal control for robust quantum gates on an atom chip
- Non-linear dispersive regime of cavity QED: The dressed dephasing model
- Active resonator reset in the nonlinear dispersive regime of circuit QED
- Optimized pulse shapes for a resonator-induced phase gate
- The Quantum Speed Limit of Optimal Controlled Phasegates for Trapped Neutral Atoms
- Measuring a transmon qubit in circuit QED: dressed squeezed states
- Implementation of Quantum Gates via Optimal Control
- Optimal Control of Quantum Measurement
Cited by in corpus (27)
- Microwave photonics with superconducting quantum circuits
- Engineering the quantum states of light in a Kerr-nonlinear resonator by two-photon driving
- Engineered Dissipation for Quantum Information Science
- Entanglement Stabilization using Parity Detection and Real-Time Feedback in Superconducting Circuits
- Gradient-based optimal control of open quantum systems using quantum trajectories and automatic differentiation
- Quantum simulation of the spin-boson model with a microwave circuit
- Optimized heat transfer at exceptional points in quantum circuits
- Universal gates for protected superconducting qubits using optimal control
- Itinerant microwave photon detector
- Gradient Ascent Pulse Engineering with Feedback
- Control and Coherence Time Enhancement of the 0- Qubit
- Reservoir Engineering using Quantum Optimal Control for Qubit Reset
- Pulse variational quantum eigensolver on cross-resonance based hardware
- Qubit Parity Measurement by Parametric Driving in Circuit QED
- Bath engineering of a fluorescing artificial atom with a photonic crystal
- On-demand driven dissipation for cavity reset and cooling
- A tunable quantum dissipator for active resonator reset in circuit QED
- Majorana bound state engineering via efficient real-space parameter optimization
- Robust and optimal control of open quantum systems
- Optimal control in large open quantum systems: the case of transmon readout and reset
- Quantum Emulation of Molecular Force Fields: A Blueprint for a Superconducting Architecture
- Absorbing state phase transitions beyond directed percolation in dissipative quantum state preparation
- Engineering the uncontrollable: Steering noisy spin-correlated radical-pairs with coherent and incoherent control
- Absence of Correlations in Dissipative Interacting Qubits: a No-Go Theorem
- Quantum Optimal Control for Pure-State Preparation Using One Initial State
- Active resonator depletion with short microwave pulses
- Low-rank optimal control of quantum devices