Conference on Lasers and Electro-Optics

Toward all-optical control of rare-earth ions for on-chip quantum technology

John G. Bartholomew, Raymond Lopez‐Rios, Jonathan M. Kindem, Jake Rochman, Tian Zhong, Andrei Faraon

Published Jan 1, 2017• 0 citations

Abstract

We present the characterization of the AC Stark shift in a rare-earth ion doped photonic crystal cavity. The strength of the interaction creates opportunities within previously inaccessible regimes of all-optical quantum memory protocols.

DOI: 10.1364/cleo_qels.2017.fw1e.4

Related papers

Controlling rare-earth ions in a nanophotonic resonator using the ac Stark shift

John G. Bartholomew, Tian Zhong, Jonathan M. Kindem +5 more

Rare-earth ions in crystals are one of the most promising platforms for building quantum technologies, such as quantum memories. Now, through the miniaturization of such systems in an on-chip nanophotonic resonator, the ac Stark shift due to a single photon can be used as a versatile way to control the ions.

arXiv:1802.06172Physical Review AJun 28, 201811 citations

Quantum Nano-photonic Devices Based on Rare-earth Ions

Andrei Faraon

I present our progress towards developing optical quantum memories based on photonic crystal cavities fabricated in rare-earth-doped crystals. These devices exhibit large spontaneous emission rate enhancement, enabling optical control of single rare-earth ion quantum bits.

Conference on Lasers and Electro-OpticsJan 1, 20170 citations

Quantum Nano-Photonic Devices Based on Rare-Earth Doped Crystals

Andrei Faraon

Rare-earth ions in crystalline hosts are coupled to nano-resonators, thus enabling large Purcell factors and high optical depths in micron-long structures. These devices will enable dense on-chip optical quantum memories and new quantum bits.

Frontiers in OpticsJan 1, 20140 citations

Quantum nano-photonic devices based on rare-earth ions (Conference Presentation)

Andrei Faraon

I present quantum nano-photonic devices based on nanophotonic resonators coupled to rare-earth-ions in crystals. The rare-earth ions exhibit long coherence times on optical transitions, which makes them suitable for optical quantum memories. We demonstrate a high-fidelity nanophotonic quantum memory based on a mesoscopic rare-earth ensemble coupled to a photonic crystal cavity. The nanocavity enables >95% spin polarization for efficient initialization of the atomic frequency comb memory, and time-bin-selective readout via enhanced optical Stark shift of the comb frequencies. Besides ensemble memories, single rare-earth-ions coupled to nano-resonators can be used as single optically addressable quantum bits where the quantum state is mapped on their Zeeman or hyperfine levels with long coherence time. Our solid-state nano-photonic quantum light-matter interfaces can be integrated with other chip-scale photon source and detector devices for multiplexed quantum and classical information processing at the nodes of quantum networks.

Quantum Photonic DevicesSep 18, 20180 citations

Integrating quantum photonics and microwaves in a rare-earth ion on-chip architecture (Conference Presentation)

John G. Bartholomew, Jake Rochman, Tian Zhong +6 more

Quantum interconnects allow disparate quantum systems to be entangled, leading to more powerful integrated quantum technology and increases in scalability. The foundation for such technology, including photonic quantum memories and coherent microwave-to-optical (M2O) transducers, have already been developed in rare-earth ion (REI) crystals. Here we demonstrate improved REI quantum device functionality in an on-chip platform that dramatically strengthens the ions’ interactions with optical fields and integrates with planar microwave technology. Using a photonic crystal nanobeam fabricated in a Nd-doped yttrium vanadate (YVO) crystal, we harness the enhanced ion-photon interactions that create single photon Rabi frequencies as large as 60 MHz. In particular, the large AC Stark shift is used to control an ensemble of approximately 4000 ions for photonic quantum memory applications. We demonstrate AC Stark shift control of the storage time in the atomic frequency comb protocol as well as the possibility of memories based on an all-optical variation of the hybrid photon echo rephasing protocol. The spin state of the REIs can also be addressed directly through the integration of microwave striplines and coplanar waveguide cavities. The achievement of optically detected magnetic resonance in on-chip waveguides and nanophotonic cavities in Nd:YVO will be presented along with the initial progress of achieving coherent M2O conversion using Raman heterodyne spectroscopy. With photonic quantum memories and sources, single ion qubits, and quantum M2O all feasible in the one integrated platform, REI technology is a promising platform for enabling large scale integration of diverse quantum resources.

Quantum Computing, Communication, and SimulationMar 14, 20180 citations

Towards a Long-Lived Quantum Memory for Single Photons in Rare Earth Doped Crystals

Elizabeth A. Goldschmidt, Joffrey K. Peters, Sergey V. Polyakov +3 more

We have demonstrated generation, storage, and retrieval of spin-waves in a rare-earth ion-doped crystal via off-resonant spontaneous Raman scattering. Efforts are underway to push this to the single-photon regime.

Frontiers in OpticsJan 1, 20130 citations