Optical manipulation of single spins in diamond

Santori, Charles; Tamarat, Philippe; Neumann, Philipp; Wrachtrup, Jörg; Fattal, David; Beausoleil, Raymond G.; Rabeau, James R.; Olivero, P.; Greentree, Andrew D.; Prawer, S.; Jelezko, Fedor; Hemmer, Philip

doi:10.1117/12.716391

Cited by 26 publications

(31 citation statements)

References 26 publications

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“…Among these systems, the nitrogen-vacancy (NV) centers in diamond exhibit a set of particularly desirable features: individual centers can be initialized and read out optically, 1-4 possess naturally long coherence times even at room temperature, [5][6][7] and can be controlled 8 using magnetic fields, 9-12 optical excitations, [13][14][15][16][17] and electric fields. [18][19][20] As a result, the NV centers have attracted much attention as prospective qubits for quantum information processing, 4,7,15,16,[21][22][23][24][25] and as nanoscale sensors.…”

Section: Introductionmentioning

confidence: 99%

Decay of the rotary echoes for the spin of a nitrogen-vacancy center in diamond

Mkhitaryan

Dobrovitski

2014

Phys. Rev. B

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We study dynamics of the electron spin of a nitrogen-vacancy (NV) center subjected to a strong driving field with periodically reversed direction (train of rotary echoes). We use analytical and numerical tools to analyze in detail the form and timescales of decay of the rotary echo train, modeling the decohering spin environment as a random magnetic field. We demonstrate that the problem can be exactly mapped onto a model of spin 1 coupled to a single bosonic mode with imaginary frequency. This mapping allows comprehensive analytical investigation beyond the standard BlochRedfield-type approaches. We explore the decay of the rotary echo train under assumption of strong driving, and identify the most important regimes of the decay. The analytical results are compared with the direct numerical simulations to confirm quantitative accuracy of our study. We present the results for realistic environment of substitutional nitrogen atoms (P1 centers), and provide a simplified but accurate description for decay of the rotary echo train of the NV center's spin. The approach presented here can also be used to study decoherence and longitudinal relaxation of other spin systems under conditions of strong driving.

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Section: Introductionmentioning

confidence: 99%

Decay of the rotary echoes for the spin of a nitrogen-vacancy center in diamond

Mkhitaryan

Dobrovitski

2014

Phys. Rev. B

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“…The NV centers can be modeled as Λ-type three level systems [73,78,79], where the states | 3 A, m s = 0 and | 3 A, m s = −1 serve as qubit states |g and |f , respectively, the state | 3 E, m s = 0 is labeled by |e and the metastable state 1 A is left aside for not fully understood [80]. In our case, the transition |g ↔ |e is resonantly coupled to the WGM with coupling constant λ and |f ↔ |e is resonantly driven through a timedependent laser pulse with Rabi frequency Ω(t) [74,84]. Using the rotating-wave approximation (RWA), in the interaction picture, the interacting Hamiltonian is written as (h = 1)…”

Section: Fast State Engineering In Nv Centers Via Designed Shortmentioning

confidence: 99%

Fast quantum state engineering via universal SU(2) transformation

et al. 2017

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We introduce a simple yet versatile protocol to inverse engineer the time-dependent Hamiltonian in two-and three level systems. In the protocol, by utilizing a universal SU(2) transformation, a given speedup goal can be obtained with large freedom to select the control parameters. As an illustration example, the protocol is applied to perform population transfer between nitrogen-vacancy (NV) centers in diamond. Numerical simulation shows that the speed of the present protocol is fast compared with that of the adiabatic process. Moreover, the protocol is also tolerant to decoherence and experimental parameter fluctuations. Therefore, the protocol may be useful for designing an experimental feasible Hamiltonian to engineer a quantum system.

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“…Such coherences were explored for single trapped ions [12,13], microwave clocks [14], microwave chips [15,16], optical lattice clocks [17], multi-photon excitations [18,19], or nuclear clocks [20]. Similar coherent superpositions are used in solid-state physics for quantum information [21], in super-conducting circuits [22,23], in a single impurity ion inserted into a crystal [24], in quantum dots [25] with protection against random nuclear spin interactions [26], and in opto-mechanical systems [27,28]. They are also actively considered within the future challenge of realising nuclear systems for quantum optics in the X-ray region [29,30].…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh-resolution spectroscopy with atomic or molecular dark resonances: Exact steady-state line shapes and asymptotic profiles in the adiabatic pulsed regime

2011

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Exact and asymptotic lineshape expressions are derived from the semi-classical density matrix representation describing a set of closed three-level Λ atomic or molecular states including decoherences, relaxation rates and light-shifts. An accurate analysis of the exact steady-state Dark Resonance profile describing the Autler-Townes doublet, the Electromagnetically Induced Transparency or Coherent Population Trapping resonance and the Fano-Feshbach lineshape, leads to the linewidth expression of the two-photon Raman transition and frequency-shifts associated to the clock transition. From an adiabatic analysis of the dynamical Optical Bloch Equations in the weak field limit, a pumping time required to efficiently trap a large number of atoms into a coherent superposition of long-lived states is established. For a highly asymmetrical configuration with different decay channels, a strong two-photon resonance based on a lower states population inversion is established when the driving continuous-wave laser fields are greatly unbalanced. When time separated resonant two-photon pulses are applied in the adiabatic pulsed regime for atomic or molecular clock engineering, where the first pulse is long enough to reach a coherent steady-state preparation and the second pulse is very short to avoid repumping into a new dark state, Dark Resonance fringes mixing continuous-wave lineshape properties and coherent Ramsey oscillations are created. Those fringes allow interrogation schemes bypassing the power broadening effect. Frequency-shifts affecting the central clock fringe computed from asymptotic profiles and related to Raman decoherence process, exhibit non-linear shapes with the three-level observable used for quantum measurement. We point out that different observables experience different shifts on the lower-state clock transition.

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Optical manipulation of single spins in diamond

Cited by 26 publications

References 26 publications

Decay of the rotary echoes for the spin of a nitrogen-vacancy center in diamond

Decay of the rotary echoes for the spin of a nitrogen-vacancy center in diamond

Fast quantum state engineering via universal SU(2) transformation

Ultrahigh-resolution spectroscopy with atomic or molecular dark resonances: Exact steady-state line shapes and asymptotic profiles in the adiabatic pulsed regime

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