Decoherence Cancellation through Noise Interference

Abstract

We propose a novel, feedback-free method to cancel the effects of decoherence in the dynamics of open quantum systems subject to dephasing. The protocol makes use of the coupling with an auxiliary system when they are both subject to the same noisy dynamics, in such a way that their interaction leads to cancellation of the noise on the system itself. This requires tuning the strength of the coupling between main and auxiliary systems as well as the ability to prepare the auxiliary system in a Fock state, which solely depends on the coupling strength. We investigate the protocol's efficiency to protect NOON states against dephasing in setups such as tweezers arrays of cold atoms. We show that the protocol's efficiency is robust against fluctuations of the optimal parameters and, remarkably, that it is independent of the temporal noise features. Therefore, it can be applied to cancel both Markovian and non-Markovian noise effects, in the regime where error-correction protocols become inefficient.

V2 Significantly re-worked version

References in corpus (42)

• Quantum Computing in the NISQ era and beyond
• Decoherence, einselection, and the quantum origins of the classical
• Cold atoms in cavity-generated dynamical optical potentials
• Preparation of Entangled States by Quantum Markov Processes
• Fault-Tolerant Quantum Dynamical Decoupling
• Quantum phases from competing short- and long-range interactions in an optical lattice
• Phonon-induced spin-spin interactions in diamond nanostructures: application to spin squeezing
• Enhancing the Coherence of a Spin Qubit by Operating it as a Feedback Loop That Controls its Nuclear Spin Bath
• Coherent many-body spin dynamics in a long-range interacting Ising chain
• Observation of a superradiant Mott insulator in the Dicke-Hubbard model
• Full control by locally induced relaxation
• Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays
• Programmable Interactions and Emergent Geometry in an Atomic Array
• Exact Results on Dynamical Decoupling by $\pi$-Pulses in Quantum Information Processes
• Open Quantum Dynamics: Complete Positivity and Entanglement
• Generation of EPR-entangled radiation through an atomic reservoir
• Erasure conversion in a high-fidelity Rydberg quantum simulator
• A Brief History of the GKLS Equation
• Scalable spin squeezing in a dipolar Rydberg atom array
• Mid-circuit correction of correlated phase errors using an array of spectator qubits
• Scalable Dissipative Preparation of Many-Body Entanglement
• Bose-glass phases of ultracold atoms due to cavity backaction
• A subwavelength atomic array switched by a single Rydberg atom
• Interference and dynamics of light from a distance-controlled atom pair in an optical cavity
• A dual-species Rydberg array
• Noise-resilient quantum evolution steered by dynamical decoupling
• Coupling of nitrogen vacancy centers in nanodiamonds by means of phonons
• Dissipative quantum control of a spin chain
• Feedback Cooling of a Single Neutral Atom
• High-fidelity detection of large-scale atom arrays in an optical lattice
• A quantum-network register assembled with optical tweezers in an optical cavity
• Using the Quantum Zeno Effect for Suppression of Decoherence
• Suppression of Bragg scattering by collective interference of spatially ordered atoms with a high-Q cavity mode
• Dynamical Reduction Models: present status and future developments
• Engineering Graph States of Atomic Ensembles by Photon-Mediated Entanglement
• Overcoming noise in quantum teleportation with multipartite hybrid entanglement
• Quantum state preparation via engineered ancilla resetting
• Assembled arrays of Rydberg-interacting atoms
• Reservoir-engineering shortcuts to adiabaticity
• Quantum state engineering by steering in the presence of errors
• Purifying teleportation
• Stability and decay of subradiant patterns in a quantum gas with photon-mediated interactions