Floquet Dynamical Decoupling at Zero Bias

Abstract

Dynamical decoupling (DD) is an efficient method to decouple systems from environmental noises and to prolong the coherence time of systems. In contrast to discrete and continuous DD protocols in the presence of bias field, we propose a Floquet DD at zero bias to perfectly suppress both the zeroth and first orders of noises according to the Floquet theory. Specifically, we demonstrate the effectiveness of this Floquet DD protocol in two typical systems including a spinor atomic Bose-Einstein condensate decohered by classical stray magnetic fields and a semiconductor quantum dot electron spin coupled to nuclear spins. Furthermore, our protocol can be used to sense high-frequency noises. The Floquet DD protocol we propose shines new light on low-cost and high-portable DD technics without bias field and with low controlling power, which may have wide applications in quantum computing, quantum sensing, nuclear magnetic resonance and magnetic resonance imaging.

6 pages, 4 figures

References in corpus (15)

• Driven coherent oscillations of a single electron spin in a quantum dot
• Fault-Tolerant Quantum Dynamical Decoupling
• Fault-tolerant quantum computation against biased noise
• GHZ versus W : Quantum Teleportation through Noisy Channels
• Concatenated Control Sequences based on Optimized Dynamic Decoupling
• Narrow-bandwidth sensing of high-frequency fields with continuous dynamical decoupling
• Long-time electron spin storage via dynamical suppression of hyperfine-induced decoherence in a quantum dot
• Coherence stabilization of a two-qubit gate by AC fields
• Coherence control for qubits
• Long-lived memory for electronic spin in a quantum dot: Numerical analysis
• Continuously observing a dynamically decoupled spin-1 quantum gas
• Decoherence in dc SQUID phase qubits
• Preserving coherent spin and squeezed spin states of a spin-1 Bose-Einstein condensate with rotary echoes
• Electron-spin double resonance of nitrogen-vacancy centers in diamond under strong driving field
• Radiofrequency response of the optically detected level anti-crossing signal in NV color centers in diamond in zero and weak magnetic fields