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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

Measurement conditions for the QZLE.The QZLE will occur at the specified locations in the parameter space (Ω, Δtm). The points are determined by equation (20) with n1 = 1, 2, 3.
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f2: Measurement conditions for the QZLE.The QZLE will occur at the specified locations in the parameter space (Ω, Δtm). The points are determined by equation (20) with n1 = 1, 2, 3.

Mentions: with n1 being positive integer, λ1 = λ2 = 1 can be obtained. In this case, arbitrary initial state is the Zeno-like fixed point which depends on the appropriate choice of parameters (Ω, Bz, Δtm, Δtf). In other words, under certain measurement conditions, the QZLE is observed. Figure 2 shows the locations where QZLE will occur in the parameter space of (Ω, Δtm). In the case of , after repeated measurements the elements of σ+ and σ− in ρ(T)(T) may disappear due to accumulated loss. However, by tuning parameters to the vicinity of the points (Ω, Δtm) given in equation (20), equation (17) can be expanded to the second order of Δtm as


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)

Measurement conditions for the QZLE.The QZLE will occur at the specified locations in the parameter space (Ω, Δtm). The points are determined by equation (20) with n1 = 1, 2, 3.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f2: Measurement conditions for the QZLE.The QZLE will occur at the specified locations in the parameter space (Ω, Δtm). The points are determined by equation (20) with n1 = 1, 2, 3.
Mentions: with n1 being positive integer, λ1 = λ2 = 1 can be obtained. In this case, arbitrary initial state is the Zeno-like fixed point which depends on the appropriate choice of parameters (Ω, Bz, Δtm, Δtf). In other words, under certain measurement conditions, the QZLE is observed. Figure 2 shows the locations where QZLE will occur in the parameter space of (Ω, Δtm). In the case of , after repeated measurements the elements of σ+ and σ− in ρ(T)(T) may disappear due to accumulated loss. However, by tuning parameters to the vicinity of the points (Ω, Δtm) given in equation (20), equation (17) can be expanded to the second order of Δtm as

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