Rephasing efficiency of sequences of phased pulses in spin-echo and light-storage experiments

Abstract

We investigate the rephasing efficiency of sequences of phased pulses for spin echoes and light storage by electromagnetically induced transparency (EIT). We derive a simple theoretical model and show that the rephasing efficiency is very sensitive to the phases of the imperfect rephasing pulses. The obtained efficiency differs substantially for spin echoes and EIT light storage, which is due to the spatially retarded coherence phases after EIT light storage. Similar behavior is also expected for other light-storage protocols with spatial retardation or for rephasing of collective quantum states with an unknown or undefined phase, e.g., as relevant in single-photon storage. We confirm the predictions of our theoretical model by experiments in a Pr${}^{3+}$:Y${}_2$SiO${}_5$ crystal.

References in corpus (6)

• Quantum computing with trapped ions
• Coherent spin control at the quantum level in an ensemble-based optical memory
• Correction of Arbitrary Errors in Population Inversion of Quantum Systems by Universal Composite Pulses
• Arbitrarily Accurate Pulse Sequences for Robust Dynamical Decoupling
• Efficient spatially-resolved multimode quantum memory
• Adiabatic refocusing of nuclear spins in Tm3+:YAG

Cited by in corpus (3)

• Germanium Vacancy in Diamond Quantum Memory Exceeding 20 ms
• Zero- and Low-Field Sensing with Nitrogen Vacancy Centers
• Universal Composite Pulses for Efficient Population Inversion with an Arbitrary Excitation Profile