Using the Quantum Zeno Effect for Suppression of Decoherence
arXiv:1406.7188 · doi:10.1088/1367-2630/18/1/013033
Abstract
Projective measurements are an essential element of quantum mechanics. In most cases, they cause an irreversible change of the quantum system on which they act. However, measurements can also be used to stabilize quantum states from decay processes, which is known as the quantum Zeno effect (QZE). Here, we demonstrate this effect for the case of a superposition state of a nuclear spin qubit, using an ancilla to perform the measurement. As a result, the quantum state of the qubit is protected against dephasing without relying on an ensemble nature of NMR experiments. We also propose a scheme to protect an arbitrary state by using QZE.
arXiv comment17 pages, 8 figures, largely rewritten
References in corpus (24)
- Decoherence, einselection, and the quantum origins of the classical
- Quantum Computers and Dissipation
- Universal dynamical decoupling of a single solid-state spin from a spin bath
- Quantum Metrology in Non-Markovian Environments
- Observation of the Quantum Zeno and Anti-Zeno effects in an unstable system
- Information transmission through a noisy quantum channel
- Quantum Zeno dynamics: mathematical and physical aspects
- Dynamical decoupling noise spectroscopy
- Tackling Systematic Errors in Quantum Logic Gates with Composite Rotations
- Magnet field sensing beyond the standard quantum limit under the effect of decoherence
- Temporal behavior of quantum mechanical systems
- Experimental realization of quantum zeno dynamics
- Continuous and Pulsed Quantum Zeno Effect
- Measurement of the Noise Spectrum Using a Multiple-Pulse Sequence
- Freezing a Coherent Field Growth in a Cavity by Quantum Zeno Effect
- Purification through Zeno-like Measurements
- Zeno and anti-Zeno polarization control of spin-ensembles by induced dephasing
- Robustness of dynamical decoupling sequences
- A relaxationless demonstration of the Quantum Zeno Paradox on an individual atom
- NMR analogues of the quantum Zeno effect
- What does an observed quantum system reveal to its observer ?
- Generation and Suppression of Decoherence in Artificial Environment for Qubit System
- Optimization of a Neutron-Spin Test of the Quantum Zeno Effect
- Demonstrating quantum algorithm acceleration with NMR quantum computer
Cited by in corpus (19)
- Quantum Zeno subspaces by repeated multi-spin projections
- Quantum metrology beyond the classical limit under the effect of dephasing
- Non-Markovian quantum-classical ratchet for ultrafast long-range electron-hole separation in condensed phases
- Hybrid quantum magnetic field sensor with an electron spin and a nuclear spin in diamond
- Experimental and theoretical analysis of noise strength and environmental correlation time for ensembles of nitrogen-vacancy centers in diamond
- Experimental Investigation of Geometric Quantum Speed Limits in an Open Quantum System
- Efficient detection of inhomogeneous magnetic fields from a single spin with Dicke states
- Continuous quantum error detection and suppression with pairwise local interactions
- Nuclear Magnetic Resonance model of an entangled sensor under noise
- Study of Open Systems with Molecules in Isotropic Liquids
- Controllable non-Markovianity in phase relaxation
- Ancilla-Assisted Protection of Information: Application to Atom-Cavity Systems
- Polarizing electron spins with a superconducting flux qubit
- Controlled Zeno-Induced Localization of Free Fermions in a Quasiperiodic Chain
- Decoherence Cancellation through Noise Interference
- Switching pure states of the dissipative Heisenberg XXZ chain by local magnetic fields
- Temporal steering of entanglement decay with single-shot control
- Temporal steering of entanglement decay with single-shot control
- Controlling Quantum Coherence of V-type Atom in Dissipative Cavity by Detuning and Weak Measurement Reversal