Limits...
Quantum Zeno and Zeno-like effects in nitrogen vacancy centers.

Qiu J, Wang YY, Yin ZQ, Zhang M, Ai Q, Deng FG - Sci Rep (2015)

Bottom Line: We present a proposal to realize the quantum Zeno effect (QZE) and quantum Zeno-like effect (QZLE) in a proximal (13)C nuclear spin by controlling a proximal electron spin of a nitrogen vacancy (NV) center.The measurement is performed by applying a microwave pulse to induce the transition between different electronic spin states.Under the practical experimental conditions, our calculations show that there exist both QZE and QZLE in a (13)C nuclear spin in the vicinity of an NV center.

View Article: PubMed Central - PubMed

Affiliation: Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, China.

ABSTRACT
We present a proposal to realize the quantum Zeno effect (QZE) and quantum Zeno-like effect (QZLE) in a proximal (13)C nuclear spin by controlling a proximal electron spin of a nitrogen vacancy (NV) center. The measurement is performed by applying a microwave pulse to induce the transition between different electronic spin states. Under the practical experimental conditions, our calculations show that there exist both QZE and QZLE in a (13)C nuclear spin in the vicinity of an NV center.

No MeSH data available.


Related in: MedlinePlus

Scheme for demonstration of the QZE in an NV center.(a) A 13C nuclear spin is at the nearest-neighbor lattice site of an NV center. (b) The energy-level diagram of the ground state hyperfine structure where a microwave drives the transition between  and  with Rabi frequency Ω and driving frequency ω.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4664959&req=5

f1: Scheme for demonstration of the QZE in an NV center.(a) A 13C nuclear spin is at the nearest-neighbor lattice site of an NV center. (b) The energy-level diagram of the ground state hyperfine structure where a microwave drives the transition between and with Rabi frequency Ω and driving frequency ω.

Mentions: Consider an NV center and a 13C nuclear spin which locates in the first coordination shell around the NV center51, as shown in Fig. 1(a). In other words, this 13C nuclear spin is at the nearest-neighbor lattice site of the NV center. As a result, there is a strong hyperfine coupling between the nuclear and electronic spins. Figure 1(b) shows the simplified energy-level diagram of the ground-state hyperfine structure associated with the nearest-neighbor 13C nuclear spin. To demonstrate the QZE, the electron-spin states (ms = −1, 0) and nuclear-spin states are chosen to code qubits. The target and detector are initially uncorrelated, i.e., they are in a product state. A strong electron-spin polarization into the ms = 0 sublevel can be induced by circulatory optical excitation-emission. This effect results from spin-selective non-radiative intersystem crossing to a metastable state lying between the ground and excited triplet states5253. Moreover, the nuclear spin could be well isolated from the electron spin, during the optical polarization and measurement of the electronic state4254. In other words, the state of nuclear spin could be unperturbed when the initialization and measurement are performed on the electronic spin.


Quantum Zeno and Zeno-like effects in nitrogen vacancy centers.

Qiu J, Wang YY, Yin ZQ, Zhang M, Ai Q, Deng FG - Sci Rep (2015)

Scheme for demonstration of the QZE in an NV center.(a) A 13C nuclear spin is at the nearest-neighbor lattice site of an NV center. (b) The energy-level diagram of the ground state hyperfine structure where a microwave drives the transition between  and  with Rabi frequency Ω and driving frequency ω.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664959&req=5

f1: Scheme for demonstration of the QZE in an NV center.(a) A 13C nuclear spin is at the nearest-neighbor lattice site of an NV center. (b) The energy-level diagram of the ground state hyperfine structure where a microwave drives the transition between and with Rabi frequency Ω and driving frequency ω.
Mentions: Consider an NV center and a 13C nuclear spin which locates in the first coordination shell around the NV center51, as shown in Fig. 1(a). In other words, this 13C nuclear spin is at the nearest-neighbor lattice site of the NV center. As a result, there is a strong hyperfine coupling between the nuclear and electronic spins. Figure 1(b) shows the simplified energy-level diagram of the ground-state hyperfine structure associated with the nearest-neighbor 13C nuclear spin. To demonstrate the QZE, the electron-spin states (ms = −1, 0) and nuclear-spin states are chosen to code qubits. The target and detector are initially uncorrelated, i.e., they are in a product state. A strong electron-spin polarization into the ms = 0 sublevel can be induced by circulatory optical excitation-emission. This effect results from spin-selective non-radiative intersystem crossing to a metastable state lying between the ground and excited triplet states5253. Moreover, the nuclear spin could be well isolated from the electron spin, during the optical polarization and measurement of the electronic state4254. In other words, the state of nuclear spin could be unperturbed when the initialization and measurement are performed on the electronic spin.

Bottom Line: We present a proposal to realize the quantum Zeno effect (QZE) and quantum Zeno-like effect (QZLE) in a proximal (13)C nuclear spin by controlling a proximal electron spin of a nitrogen vacancy (NV) center.The measurement is performed by applying a microwave pulse to induce the transition between different electronic spin states.Under the practical experimental conditions, our calculations show that there exist both QZE and QZLE in a (13)C nuclear spin in the vicinity of an NV center.

View Article: PubMed Central - PubMed

Affiliation: Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, China.

ABSTRACT
We present a proposal to realize the quantum Zeno effect (QZE) and quantum Zeno-like effect (QZLE) in a proximal (13)C nuclear spin by controlling a proximal electron spin of a nitrogen vacancy (NV) center. The measurement is performed by applying a microwave pulse to induce the transition between different electronic spin states. Under the practical experimental conditions, our calculations show that there exist both QZE and QZLE in a (13)C nuclear spin in the vicinity of an NV center.

No MeSH data available.


Related in: MedlinePlus