Entangling microwaves with optical light

Sahu, Rajani Kanta; Qiu, Liu; Hease, William; Arnold, Georg J.; Minoguchi, Y.; Rabl, Peter; Fink, J. M.

doi:10.48550/arxiv.2301.03315

Cited by 4 publications

(5 citation statements)

References 15 publications

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“…As mentioned in Section 1, this research aims to develop an integrated device capable of generating entanglement between microwave and optical photons. The process is similar to the one described in [16], with the added advantages of photonic integration, such as lower transmission losses, lower coupling losses, and a reduction in the size, weight, and power consumption (SWaP) of the device. To achieve this goal, we designed the integrated structure shown in Figure 2, which is currently in the fabrication phase.…”

Section: Discussionmentioning

confidence: 99%

“…By suppressing or filtering out the SFG optical sideband, we are left with a triplyresonant system specialized for the generation of a microwave-optical photon entanglement, as shown in Figure 1. In the scenario where the condition (w DFG = w pump − w µW ) is met, the pump tone effectively generates pairs of entangled microwave and optical photons through the process of spontaneous parametric downconversion [16].…”

Section: Introductionmentioning

confidence: 99%

“…An example of this entanglement between microwave and optical fields at an mK range is presented in [16]. There, a 2.5 mm radius, 150 µm thick ultra-low noise LiNbO 3 optical ring resonator was placed inside a superconducting microwave cavity at 7 mK.…”

Section: Introductionmentioning

confidence: 99%

“…This device is fully compatible with superconducting qubits but works at cryogenic temperatures. In addition, since the whispering gallery mode resonator (WGMR) used in [16] is a 150 µm thick crystal, a system consisting of two gradient index lenses (GRINs) and a prism had to be used to couple the light into and out of the optical ring resonator, making the coupling mechanism complex and bulky.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1.In the scenario where the condition (w DFG = w pump − w µW ) is met, the pump tone effectively generates pairs of entangled microwave and optical photons through the process of spontaneous parametric downconversion[16].…”

mentioning

confidence: 99%

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Towards a Lithium Niobate Photonic Integrated Circuit for Quantum Sensing Applications

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et al. 2024

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Quantum transducers are key components for hybrid quantum networks, enabling the transfer of quantum states between microwave and optical photons. In the quantum community, many efforts have focused on creating and verifying the entanglement between microwave and optical fields in systems that typically operate at temperatures in the millikelvin range. Our goal is to develop an integrated microwave optical entanglement device based on a lithium niobate whispering gallery mode resonator (WGMR). To investigate the feasibility of developing such an integrated device, first, a passive photonic integrated circuit (PIC) was designed, fabricated, and characterized. The PIC was developed on a thin-film lithium niobate (TFLN) on an insulator platform, and it includes eight ring resonators and four asymmetric Mach–Zehnder interferometers. This paper presents the design and operational principles of the integrated device for microwave–optical entanglement, as well as the results of the characterization of the passive PIC.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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et al. 2024

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Semiconductor-on-diamond cavities for spin optomechanics

Shandilya

Barclay

2023

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Optomechanical cavities are powerful tools for classical and quantum information processing that can be realized using nanophotonic structures that co-localize optical and mechanical resonances. Typically, phononic localization requires suspended devices that forbid vertical leakage of mechanical energy. Achieving this in some promising quantum photonic materials such as diamond requires non-standard nanofabrication techniques, while hindering integration with other components and exacerbating heating related challenges. As an alternative, we have developed a semiconductor-on-diamond platform that co-localizes phononic and photonic modes without requiring undercutting. We have designed an optomechanical crystal cavity that combines high optomechanical coupling with low dissipation, and we show that this platform will enable optomechanical coupling to spin qubits in the diamond substrate. These properties demonstrate the promise of this platform for realizing quantum information processing devices based on spin, phonon, and photon interactions.

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Design of an ultra-low mode volume piezo-optomechanical quantum transducer

et al. 2023

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Coherent transduction of quantum states from the microwave to the optical domain can play a key role in quantum networking and distributed quantum computing. We present the design of a piezo-optomechanical device formed in a hybrid lithium niobate on silicon platform, that is suitable for microwave-to-optical quantum transduction. Our design is based on acoustic hybridization of an ultra-low mode volume piezoacoustic cavity with an optomechanical crystal cavity. The strong piezoelectric nature of lithium niobate allows us to mediate transduction via an acoustic mode which only minimally interacts with the lithium niobate, and is predominantly silicon-like, with very low electrical and acoustic loss. We estimate that this transducer can realize an intrinsic conversion efficiency of up to 35% with <0.5 added noise quanta when resonantly coupled to a superconducting transmon qubit and operated in pulsed mode at 10 kHz repetition rate. The performance improvement gained in such hybrid lithium niobate-silicon transducers make them suitable for heralded entanglement of qubits between superconducting quantum processors connected by optical fiber links.

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Entangling microwaves with optical light

Cited by 4 publications

References 15 publications

Towards a Lithium Niobate Photonic Integrated Circuit for Quantum Sensing Applications

Towards a Lithium Niobate Photonic Integrated Circuit for Quantum Sensing Applications

Semiconductor-on-diamond cavities for spin optomechanics

Design of an ultra-low mode volume piezo-optomechanical quantum transducer

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