We propose a scheme to realize frequency conversion of photons, using a hybrid system with a qubit coupled to both a resonator cavity and an optomechanical cavity. In this system, a high-energy photon can be converted into a low-energy photon plus a phonon and vice versa; the qubit works as an intermediate medium with its states unchanged. Moreover, the process can be exquisitely tuned by changing the frequency of the qubit or the resonator mode, providing additional control for the conversion. We further analyze the system dynamics and demonstrate two Rabi oscillation behaviors with dissipations. With the state-of-the-art techniques in cavity quantum electrodynamics and optomechanical systems, our proposal would be implemented and an efficient and controllable quantum light source can be achieved.We propose a scheme to realize frequency conversion of photons, using a hybrid system with a qubit coupled to both a resonator cavity and an optomechanical cavity. In this system, a high-energy photon can be converted into a low-energy photon plus a phonon and vice versa; the qubit works as an intermediate medium with its states unchanged. Moreover, the process can be exquisitely tuned by changing the frequency of the qubit or the resonator mode, providing additional control for the conversion. We further analyze the system dynamics and demonstrate two Rabi oscillation behaviors with dissipations. With the state-of-the-art techniques in cavity quantum electrodynamics and optomechanical systems, our proposal would be implemented and an efficient and controllable quantum light source can be achieved.

Physical Review AJun 12, 20234 citations

Optomechanical Squeezing of Light

Thomas Purdy, Pen-Li Yu, Robert W. Peterson +2 more

Bulletin of the American Physical SocietyMar 5, 20140 citations

Application of Optomechanics

Nobuyuki Matsumoto

Springer thesesDec 1, 20151 citation

Diamond optomechanical cavity with a color center for coherent microwave-to-optical quantum interfaces

Byunggi Kim, Hodaka Kurokawa, K. Sakai +3 more

Quantum transduction between microwave and optical photons plays a key role in quantum communication among remote qubits. Although the quantum transduction schemes generating communication photons have been successfully demonstrated by using optomechanical interfaces, the low conversion efficiency remains an obstacle to the implementation of a quantum network consisting of multiple qubits. Here, we present an efficient quantum transduction scheme using a one-dimensional diamond optomechanical crystal cavity tuned at a color-center emission without optomechanical coupling. The optomechanical crystal cavity incorporates a thin aluminum nitride ( $\mathrm{Al}\mathrm{N}$ ) pad piezoelectric coupler near the concentrator cavity region, while retaining ultrasmall mechanical and optical mode volumes of about $1.5\phantom{\rule{0.1em}{0ex}}\ifmmode\times\else\texttimes\fi{}\phantom{\rule{0.1em}{0ex}}{10}^{\ensuremath{-}4}({\mathrm{\ensuremath{\Lambda}}}_{p}{)}^{3}$ and $0.2(\ensuremath{\lambda}/n{)}^{3}$, respectively. The energy level of a coherent color-center electron is manipulated by a strong mechanical-mode--color-center electron-coupling rate up to 16.4 MHz. In our system, we theoretically predict that the population-conversion efficiency from a single microwave photon into an optical photon can reach 15% combined with current technologies. The coherent conversion efficiency is over 10% with a reasonably pure decay time of ${T}_{2}^{\ensuremath{\ast}}>10\phantom{\rule{0.25em}{0ex}}\mathrm{ns}$. Our results imply that an atomic color center strongly coupled to the optomechanical crystal cavity will offer a highly efficient quantum transduction platform.Quantum transduction between microwave and optical photons plays a key role in quantum communication among remote qubits. Although the quantum transduction schemes generating communication photons have been successfully demonstrated by using optomechanical interfaces, the low conversion efficiency remains an obstacle to the implementation of a quantum network consisting of multiple qubits. Here, we present an efficient quantum transduction scheme using a one-dimensional diamond optomechanical crystal cavity tuned at a color-center emission without optomechanical coupling. The optomechanical crystal cavity incorporates a thin aluminum nitride ($\mathrm{Al}\mathrm{N}$) pad piezoelectric coupler near the concentrator cavity region, while retaining ultrasmall mechanical and optical mode volumes of about $1.5\phantom{\rule{0.1em}{0ex}}\ifmmode\times\else\texttimes\fi{}\phantom{\rule{0.1em}{0ex}}{10}^{\ensuremath{-}4}({\mathrm{\ensuremath{\Lambda}}}_{p}{)}^{3}$ and $0.2(\ensuremath{\lambda}/n{)}^{3}$, respectively. The energy level of a coherent color-center electron is manipulated by a strong mechanical-mode--color-center electron-coupling rate up to 16.4 MHz. In our system, we theoretically predict that the population-conversion efficiency from a single microwave photon into an optical photon can reach 15% combined with current technologies. The coherent conversion efficiency is over 10% with a reasonably pure decay time of ${T}_{2}^{\ensuremath{\ast}}>10\phantom{\rule{0.25em}{0ex}}\mathrm{ns}$. Our results imply that an atomic color center strongly coupled to the optomechanical crystal cavity will offer a highly efficient quantum transduction platform.

Physical Review AppliedOct 13, 202312 citations

Diamond optomechanical cavity with a color center for microwave-to-optical quantum interfaces

Byunggi Kim, Hodaka Kurokawa, K. Sakai +3 more

Quantum transduction between microwave and optical photons plays a key role in quantum communication among remote qubits. Although the quantum transduction schemes generating communication photons have been successfully demonstrated by using optomechanical interfaces, the low conversion efficiency remains an obstacle to the implementation of a quantum network consisting of multiple qubits. Here, we present an efficient quantum transduction scheme using a one-dimensional diamond optomechanical crystal cavity tuned at a color-center emission without optomechanical coupling. The optomechanical crystal cavity incorporates a thin aluminum nitride (AlN) pad piezoelectric coupler near the concentrator cavity region, while retaining ultrasmall mechanical and optical mode volumes of about 1.5 \times 10^{-4} and ~0.2(λ/n)^3, respectively. The energy level of a coherent color-center electron is manipulated by a strong mechanical-mode-color-center electron-coupling rate up to 16.4MHz. In our system, we theoretically predict that the population-conversion efficiency from a single microwave photon into an optical photon can reach 15% combined with current technologies. The coherent conversion efficiency is over 10% with a reasonably pure decay time of T^2_{*} > 10 ns. Our results imply that an atomic color center strongly coupled to the optomechanical crystal cavity will offer a highly efficient quantum transduction platform.Quantum transduction between microwave and optical photons plays a key role in quantum communication among remote qubits. Although the quantum transduction schemes generating communication photons have been successfully demonstrated by using optomechanical interfaces, the low conversion efficiency remains an obstacle to the implementation of a quantum network consisting of multiple qubits. Here, we present an efficient quantum transduction scheme using a one-dimensional diamond optomechanical crystal cavity tuned at a color-center emission without optomechanical coupling. The optomechanical crystal cavity incorporates a thin aluminum nitride (AlN) pad piezoelectric coupler near the concentrator cavity region, while retaining ultrasmall mechanical and optical mode volumes of about 1.5 \times 10^{-4} and ~0.2(λ/n)^3, respectively. The energy level of a coherent color-center electron is manipulated by a strong mechanical-mode-color-center electron-coupling rate up to 16.4MHz. In our system, we theoretically predict that the population-conversion efficiency from a single microwave photon into an optical photon can reach 15% combined with current technologies. The coherent conversion efficiency is over 10% with a reasonably pure decay time of T^2_{*} > 10 ns. Our results imply that an atomic color center strongly coupled to the optomechanical crystal cavity will offer a highly efficient quantum transduction platform.

arXiv:2305.08306May 15, 20230 citations

Optomechanics for quantum technologies

Shabir Barzanjeh, André Xuereb, Simon Gröblacher +3 more

arXiv:2111.14715Nature PhysicsDec 6, 20211 citation

\mathrm{Al}\mathrm{N}

) pad piezoelectric coupler near the concentrator cavity region, while retaining ultrasmall mechanical and optical mode volumes of about $1.5\phantom{\rule{0.1em}{0ex}}\ifmmode\times\else\texttimes\fi{}\phantom{\rule{0.1em}{0ex}}{10}^{\ensuremath{-}4}({\mathrm{\ensuremath{\Lambda}}}_{p}{)}^{3}$ and $0.2(\ensuremath{\lambda}/n{)}^{3}$, respectively. The energy level of a coherent color-center electron is manipulated by a strong mechanical-mode--color-center electron-coupling rate up to 16.4 MHz. In our system, we theoretically predict that the population-conversion efficiency from a single microwave photon into an optical photon can reach 15% combined with current technologies. The coherent conversion efficiency is over 10% with a reasonably pure decay time of ${T}_{2}^{\ensuremath{\ast}}>10\phantom{\rule{0.25em}{0ex}}\mathrm{ns}$. Our results imply that an atomic color center strongly coupled to the optomechanical crystal cavity will offer a highly efficient quantum transduction platform.