Split-Gate Cavity Coupler for Silicon Circuit Quantum Electrodynamics
- URL: http://arxiv.org/abs/2003.01088v1
- Date: Mon, 2 Mar 2020 18:24:10 GMT
- Title: Split-Gate Cavity Coupler for Silicon Circuit Quantum Electrodynamics
- Authors: F. Borjans, X. Croot, S. Putz, X. Mi, S. M. Quinn, A. Pan, J.
Kerckhoff, E. J. Pritchett, C. A. Jackson, L. F. Edge, R. S. Ross, T. D.
Ladd, M. G. Borselli, M. F. Gyure, and J. R. Petta
- Abstract summary: Coherent charge-photon and spin-photon coupling has recently been achieved in silicon double quantum dots (DQD)
We demonstrate a versatile split-gate cavity-coupler that allows more than one DQD to be coupled to the same microwave cavity.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Coherent charge-photon and spin-photon coupling has recently been achieved in
silicon double quantum dots (DQD). Here we demonstrate a versatile split-gate
cavity-coupler that allows more than one DQD to be coupled to the same
microwave cavity. Measurements of the cavity transmission as a function of
level detuning yield a charge cavity coupling rate $g_c/2\pi$ = 58 MHz, charge
decoherence rate $\gamma_c/2\pi$ = 36 MHz, and cavity decay rate $\kappa/2\pi$
= 1.2 MHz. The charge cavity coupling rate is in good agreement with device
simulations. Our coupling technique can be extended to enable simultaneous
coupling of multiple DQDs to the same cavity mode, opening the door to
long-range coupling of semiconductor qubits using microwave frequency photons.
Related papers
- Strong hole-photon coupling in planar Ge: probing the charge degree and
Wigner molecule states [0.0]
We present strong coupling between a hole charge qubit and microwave photons in a superconducting quantum interference device (SQUID) array resonator.
This work paves the way towards coherent quantum connections between remote hole qubits in planar Ge, required to scale up hole-based quantum processors.
arXiv Detail & Related papers (2023-10-31T17:27:46Z) - Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols.
We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
arXiv Detail & Related papers (2023-04-24T15:43:08Z) - Strong coupling between a microwave photon and a singlet-triplet qubit [0.0]
We introduce a zincblende InAs nanowire double quantum dot with strong spin-orbit interaction in a magnetic-field resilient, high-quality resonator.
Experiments on even charge parity states and at large magnetic fields allow to identify the relevant spin states.
Results pave the way towards large-scale quantum system based on singlet-triplet qubits.
arXiv Detail & Related papers (2023-03-29T16:20:24Z) - Quantum-limited millimeter wave to optical transduction [50.663540427505616]
Long distance transmission of quantum information is a central ingredient of distributed quantum information processors.
Current approaches to transduction employ solid state links between electrical and optical domains.
We demonstrate quantum-limited transduction of millimeter-wave (mmwave) photons into optical photons using cold $85$Rb atoms as the transducer.
arXiv Detail & Related papers (2022-07-20T18:04:26Z) - Photon generation and entanglement in a double superconducting cavity [105.54048699217668]
We study the dynamical Casimir effect in a double superconducting cavity in a quantum electrodynamics architecture.
We study the creation of photons when the walls oscillate harmonically with a small amplitude.
arXiv Detail & Related papers (2022-07-18T16:43:47Z) - High-efficiency microwave-optical quantum transduction based on a cavity
electro-optic superconducting system with long coherence time [52.77024349608834]
Frequency conversion between microwave and optical photons is a key enabling technology to create links between superconducting quantum processors.
We propose a microwave-optical platform based on long-coherence-time superconducting radio-frequency (SRF) cavities.
We show that the fidelity of heralded entanglement generation between two remote quantum systems is enhanced by the low microwave losses.
arXiv Detail & Related papers (2022-06-30T17:57:37Z) - Strong coupling between a photon and a hole spin in silicon [0.0]
Coupling spins strongly to the photonic modes of superconducting microwave resonators would enable fast non-demolition readout and long-range, on-chip connectivity.
We demonstrate strong coupling between a microwave photon in a superconducting resonator and a hole spin in a silicon-based double quantum dot issued from a foundry-compatible MOS fabrication process.
arXiv Detail & Related papers (2022-06-28T15:26:35Z) - Spin-Phonon-Photon Strong Coupling in a Piezomechanical Nanocavity [0.0]
We introduce a hybrid tripartite quantum system for strong coupling between a semiconductor spin, a mechanical phonon, and a microwave photon.
We estimate photon-to-spin quantum state transfer fidelities exceeding 0.97 based on separately demonstrated device parameters.
arXiv Detail & Related papers (2022-02-23T03:45:39Z) - Coupling two charge qubits via a superconducting resonator operating in
the resonant and dispersive regimes [5.526775342940154]
We describe a new type of charge qubit formed by an electron confined in a triple-quantum-dot system.
We present the form for the long-range dipolar coupling between the charge qubit and a superconducting resonator.
We find that the fidelity for the iSWAP gate can reach fidelity higher than 99% for the noise level typical in experiments.
arXiv Detail & Related papers (2020-12-28T07:49:41Z) - Conditional quantum operation of two exchange-coupled single-donor spin
qubits in a MOS-compatible silicon device [48.7576911714538]
Silicon nanoelectronic devices can host single-qubit quantum logic operations with fidelity better than 99.9%.
For the spins of an electron bound to a single donor atom, introduced in the silicon by ion implantation, the quantum information can be stored for nearly 1 second.
Here we demonstrate the conditional, coherent control of an electron spin qubit in an exchange-coupled pair of $31$P donors implanted in silicon.
arXiv Detail & Related papers (2020-06-08T11:25:16Z) - Optimal coupling of HoW$_{10}$ molecular magnets to superconducting
circuits near spin clock transitions [85.83811987257297]
We study the coupling of pure and magnetically diluted crystals of HoW$_10$ magnetic clusters to microwave superconducting coplanar waveguides.
Results show that engineering spin-clock states of molecular systems offers a promising strategy to combine sizeable spin-photon interactions with a sufficient isolation from unwanted magnetic noise sources.
arXiv Detail & Related papers (2019-11-18T11:03:06Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.