Engineering Phonon-Qubit Interactions using Phononic Crystals
arXiv:2310.06236 · doi:10.1038/s41567-024-02697-5
Abstract
The ability to control phonons in solids is key for diverse quantum applications, ranging from quantum information processing to sensing. Often, phonons are sources of noise and decoherence, since they can interact with a variety of solid-state quantum systems. To mitigate this, quantum systems typically operate at milli-Kelvin temperatures to reduce the number of thermal phonons. Here we demonstrate an alternative approach that relies on engineering phononic density of states, drawing inspiration from photonic bandgap structures that have been used to control the spontaneous emission of quantum emitters. We design and fabricate diamond phononic crystals with a complete phononic bandgap spanning 50 - 70 gigahertz, tailored to suppress interactions of a single silicon-vacancy color center with resonant phonons of the thermal bath. At 4 Kelvin, we demonstrate a reduction of the phonon-induced orbital relaxation rate of the color center by a factor of 18 compared to bulk. Furthermore, we show that the phononic bandgap can efficiently suppress phonon-color center interactions up to 20 Kelvin. In addition to enabling operation of quantum memories at higher temperatures, the ability to engineer qubit-phonon interactions may enable new functionalities for quantum science and technology, where phonons are used as carriers of quantum information.
References in corpus (33)
- Cavity Optomechanics
- Quantum sensing
- Fast universal quantum control above the fault-tolerance threshold in silicon
- Quantum transduction of optical photons from a superconducting qubit
- Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
- Phonon-mediated quantum state transfer and remote qubit entanglement
- Multiple intrinsically identical single photon emitters in the solid-state
- All-optical initialization, readout, and coherent preparation of single silicon-vacancy spins in diamond
- Strain engineering of the silicon-vacancy center in diamond
- Phononic bandgap nano-acoustic cavity with ultralong phonon lifetime
- Universal Quantum Transducers based on Surface Acoustic Waves
- Electron-phonon processes of the silicon-vacancy centre in diamond
- An integrated nanophotonic quantum register based on silicon-vacancy spins in diamond
- Coherent control of the silicon-vacancy spin in diamond
- Design of Optomechanical Cavities and Waveguides on a Simultaneous Bandgap Phononic-Photonic Crystal Slab
- Phonon networks with SiV centers in diamond waveguides
- Phonon limit to simultaneous near-unity efficiency and indistinguishability in semiconductor single photon sources
- A 1D Optomechanical crystal with a complete phononic band gap
- Control of coherent information via on chip photonic-phononic emitter-receivers
- Narrow-linewidth homogeneous optical emitters in diamond nanostructures via silicon ion implantation
- Coherent Acoustic Control of a Single Silicon Vacancy Spin in Diamond
- Quantum state preparation, tomography, and entanglement of mechanical oscillators
- Two-Dimensional Optomechanical Crystal Cavity with High Quantum Cooperativity
- Direct observation of nanofabrication influence on the optical properties of single self-assembled InAs/GaAs quantum dots
- Quantum interference of electromechanically stabilized emitters in nanophotonic devices
- Coupling of a Single Tin-vacancy Center to a Photonic Crystal Cavity in Diamond
- Engineering nanoscale hypersonic phonon transport
- Enhanced nonlinear optomechanics in a coupled-mode photonic crystal device
- Non-classical mechanical states guided in a phononic waveguide
- Phonon engineering of atomic-scale defects in superconducting quantum circuits
- Prolonged orbital relaxation by locally modified phonon density of states for SiV center in nanodiamonds
- Modification of phonon processes in nanostructured rare-earth-ion-doped crystals
- A phononic crystal coupled to a transmission line via an artificial atom
Cited by in corpus (7)
- Homogeneous Free-Standing Nanostructures from Bulk Diamond over Millimeter Scales for Quantum Technologies
- Purcell-enhanced spin-phonon coupling with a single color center
- Many-Body Entanglement in Solid-State Emitters
- Low-noise Optomechanical Single Phonon-photon Conversion for Quantum Networks
- A Concise Primer on Solid-State Quantum Emitters
- Saturable absorption in defect-rich diamond nanophotonics
- Quantum jumps of sound