Probing Surface-Bound Atoms with Quantum Nanophotonics

Hümmer, Daniel; Romero‐Isart, Oriol; Rauschenbeutel, Arno; Schneeweiß, Philipp

doi:10.1103/physrevlett.126.163601

Cited by 7 publications

(4 citation statements)

References 69 publications

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“…It can thus be as relevant as the first-order contribution which is resonant only for spin waves fulfilling ω β = ω − . This cumulative effect of second-order contributions has already been found to be relevant for e.g., acoustic phonon baths [66].…”

Section: System and Equations Of Motionmentioning

confidence: 54%

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Towards a quantum interface between spin waves and paramagnetic spin baths

2022

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Spin waves have risen as promising candidate information carriers for the next generation of information technologies. Recent experimental demonstrations of their detection using electron spins in diamond pave the way towards studying the back-action of a controllable paramagnetic spin bath on the spin waves. Here, we present a macroscopic quantum theory describing the interaction between spin waves and paramagnetic spins. As a case study, we consider an ensemble of nitrogen-vacancy spins in diamond in the vicinity of an yttriumiron-garnet thin film. We show how the back-action of the ensemble results in strong and tuneable modifications of the spin wave spectrum and propagation properties. These modifications include the full suppression of spin wave propagation and, in a different parameter regime, the enhancement of their propagation length by ∼50% for modes near resonance with the NV transition frequency. Furthermore, we show how the spin wave thermal fluctuations-even down to the quantum magnonic ground state-induce a measurable frequency shift of the paramagnetic spins in the bath. This shift results in a thermal dispersion force that can be measured optically and/or mechanically with a diamond mechanical resonator. In addition, we use our theory to compute the spin wave-mediated interaction between the spins in the bath. We show that all the above effects are measurable by state-of-the-art experiments. Our results provide the theoretical foundation for describing hybrid quantum systems of spin waves and spin baths and establish the potential of quantum spins as active control, sensing, and interfacing tools for spintronics.

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Section: System and Equations Of Motionmentioning

confidence: 54%

“…These conditions are well satisfied in our system due to the lower cutoff for the spin wave bands [see Fig. 1(b)], as opposed to other reservoirs where it might be compromised by the presence of low-frequency modes [66].…”

Section: Appendix C: Derivation Of the Resonant Spin Wave-paramagneti...mentioning

confidence: 69%

Towards a quantum interface between spin waves and paramagnetic spin baths

2022

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“…We expect further development of the picosecond composite scheme for sophisticated nanophotonic atomic state controls. Besides enabling the nonlinear quantum optical scenarios as mentioned earlier, the flexible composite technique may open interesting perspectives in fundamental research such as to enable arbitrary electric dipole control in the near field by driving universal qubit gates [32], to achieve error-resilient atomic spectroscopy [64,65], and to probe atom-surface interaction [66,67] through an investigation of the optical properties of mesoscopic vapour [56] with an unprecedented level of control flexibility.…”

Section: Discussionmentioning

confidence: 99%

Composite picosecond control of atomic state through a nanofiber interface

Ma¹,

Liu²,

Ji³

et al. 2022

Preprint

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Accurate control of single emitters at nanophotonic interfaces may greatly expand the accessible quantum states of coupled optical spins in the confined geometry and to unveil exotic nonlinear quantum optical effects. However, the optical control is challenged by spatially varying light-atom coupling strength generic to nanophotonics. We demonstrate numerically that despite the nearfield inhomogenuity, nearly perfect atomic state control can be achieved by exploiting geometric robustness of optical transitions with composite picosecond excitations. Our proposal is followed by a proof-of-principle demonstration where an N = 3 composite sequence is applied to robustly invert the D1 population of free-flying 85 Rb atoms trespassing a nanofiber interface. The precise control is confirmed by comparing the D2 fiber transmission with full-level simulation of the mesoscopic light-atom interaction across the composite parameter space. We project the scheme to large N for precise phase patterning and arbitrary optical dipole control at the nanophotonic interface.

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“…Atomic states near an optical nanofibre can be probed and manipulated through the evanescent fields [104,105]. Two-colour (i.e.…”

Section: Optical Nanofibre-based Traps For Atomsmentioning

confidence: 99%

Atom-light interactions using optical nanofibres—a perspective

Li,

Brown,

Vylegzhanin

et al. 2024

J. Phys. Photonics

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Complete control of light-matter interactions at a single quantum level is critical for quantum science applications such as precision measurement and information processing. Nanophotonic devices, developed with recent advancements in nanofabrication techniques, can be used to tailor the interactions between single photons and atoms. One example of such a nanophotonic device is the optical nanofibre, which provides an excellent platform due to the strongly confined transverse light fields, long interaction length, low loss, and diverse optical modes. This facilitates a strong interaction between atoms and guided light, revealing chiral atom-light processes and the prospect of waveguide quantum electrodynamics. This paper highlights recent advances, experimental techniques, and future perspectives of the optical nanofibre-atom hybrid quantum platform.

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Probing Surface-Bound Atoms with Quantum Nanophotonics

Cited by 7 publications

References 69 publications

Towards a quantum interface between spin waves and paramagnetic spin baths

Towards a quantum interface between spin waves and paramagnetic spin baths

Composite picosecond control of atomic state through a nanofiber interface

Atom-light interactions using optical nanofibres—a perspective

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