Phonon waveguides for electromechanical circuits

Hatanaka, Daiki; Mahboob, Imran; Onomitsu, Koji; Yamaguchi, Hiroshi

doi:10.1038/nnano.2014.107

Cited by 149 publications

(141 citation statements)

References 38 publications

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“…The equally spaced periodic arrangement of mechanical resonators forms a phononic band gap and slow phonon effects were confirmed near the band edge. The nonlinear interaction allows the switching of phonon propagation, demonstrating a dynamically controlled phononic crystal waveguide for the first time [21].…”

Section: Multi-mode Operationmentioning

confidence: 98%

“…Even for incoherent parametric pumping, i.e., the excitation by non-sinusoidal noise input, the vibration at the first mode shows highly coherent spontaneous osci lIati on. We recently further extended the concept to arrayed mechanical resonators [15,21]. The one-dimensionally aligned suspended structure constructs a phononic waveguide, where the localized mechanical vibration, i.e., the wave packet of acoustic phonons, can be propagated from one end to the other in real space.…”

Section: Multi-mode Operationmentioning

confidence: 99%

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Nonlinear electromechanical resonators ~ from phonon lasing operation to nanomechanical processors

Yamaguchi

Hatanaka

Mahboob

et al. 2014

2014 IEEE International Nanoelectronics Conference (INEC)

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We will review our recent activities on GaAs/AIGaAs electromechanical parametric resonators. Piezoelectric transduction allows us to electrically modulate the resonance frequency, providing an on-chip testbed for nonlinear phononics experiments. Both degenerate and non degenerate parametric amplification, as well as the excitation of parametric resonance, are perfonned for single and multi-mode resonators. We demonstrate several nonlinear phenomenon, including phonon lasing, coherent control, phonon propagation switching, and electromechanical signal processing.

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Section: Multi-mode Operationmentioning

confidence: 98%

Section: Multi-mode Operationmentioning

confidence: 99%

Nonlinear electromechanical resonators ~ from phonon lasing operation to nanomechanical processors

Yamaguchi

Hatanaka

Mahboob

et al. 2014

2014 IEEE International Nanoelectronics Conference (INEC)

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“…For specific resonator designs, the tether dimensions can be optimized to provide improved Q. 11, 12 Recent research into phonon-engineered structures has led to a number of designs that allow selective phonon control, from phonon cavities 13–16 , waveguides 17, 18 , and filters. 19, 20 The ability to control acoustic phonon dispersion enables the design of acoustic/phononic bandgaps 19, 20 that can be used as tethers or shields to efficiently confine energy in a phonon cavity or resonator.…”

mentioning

confidence: 99%

Approaching the intrinsic quality factor limit for micromechanical bulk acoustic resonators using phononic crystal tethers

Gokhale

Gorman

2017

Applied Physics Letters

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We systematically demonstrate that one-dimensional phononic crystal (1-D PnC) tethers can significantly reduce tether loss in micromechanical resonators to a point where the total energy loss is dominated by intrinsic mechanisms, particularly phonon damping. Multiple silicon resonators are designed, fabricated, and tested to provide comparisons in terms of the number of periods in the PnC and the resonance frequency, as well as a comparison with conventional straight-beam tethers. The product of resonance frequency and measured quality factor (f×Q) is the critical figure of merit, as it is inversely related to the total energy dissipation in a resonator. For a wide range of frequencies, devices with PnC tethers consistently demonstrate higher f×Q values than the best conventional straight-beam tether designs. The f×Q product improves with increasing number of PnC periods, and at a maximum value of 1.2 × 1013 Hz, approaches limiting values set by intrinsic material loss mechanisms.

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“…An outstanding challenge is to achieve quantum state transfer [5,6] (QST) with high fidelity despite the presence of noise and decoherence in the quantum channel. In a quantum optical setup, the quantum channels are realized as 1D waveguides, where quantum information is carried by "flying qubits" implemented either by photons in the optical [7][8][9] or microwave regime [10-13], or phonons [14,15]. Thus, imperfections in the quantum channel include photon or phonon loss, and, in particular for microwave photons and phonons, a (thermal) noise background [16].…”

mentioning

confidence: 99%

Microwave Quantum States Beat the Heat

Fink

2017

Physics

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We describe a quantum state transfer protocol, where a quantum state of photons stored in a first cavity can be faithfully transferred to a second distant cavity via an infinite 1D waveguide, while being immune to arbitrary noise (e.g., thermal noise) injected into the waveguide. We extend the model and protocol to a cavity QED setup, where atomic ensembles, or single atoms representing quantum memory, are coupled to a cavity mode. We present a detailed study of sensitivity to imperfections, and apply a quantum error correction protocol to account for random losses (or additions) of photons in the waveguide. Our numerical analysis is enabled by matrix product state techniques to simulate the complete quantum circuit, which we generalize to include thermal input fields. Our discussion applies both to photonic and phononic quantum networks. DOI: 10.1103/PhysRevLett.118.133601 Introduction.-The ability to transfer quantum states between distant nodes of a quantum network via a quantum channel is a basic task in quantum information processing [1][2][3][4]. An outstanding challenge is to achieve quantum state transfer [5,6] (QST) with high fidelity despite the presence of noise and decoherence in the quantum channel. In a quantum optical setup, the quantum channels are realized as 1D waveguides, where quantum information is carried by "flying qubits" implemented either by photons in the optical [7][8][9] or microwave regime [10-13], or phonons [14,15]. Thus, imperfections in the quantum channel include photon or phonon loss, and, in particular for microwave photons and phonons, a (thermal) noise background [16]. In this Letter, we propose a QST protocol and a corresponding quantum optical setup which allow for state transfer with high fidelity, undeterred by these imperfections. A key feature is that our protocol and setup are a priori immune to quantum or classical noise injected into the 1D waveguide, while imperfections such as random generation and loss of photons or phonons during transmission can be naturally corrected with an appropriate quantum error correction (QEC) scheme [17].The generic setup for QST in a quantum optical network is illustrated in Fig. 1 as transmission of a qubit state from a first to a second distant two-level atom via an infinite 1D bosonic open waveguide. The scheme of Fig. 1(a) assumes a chiral coupling of the two-level atoms to the waveguide [18,19], as demonstrated in recent experiments with atoms [20] and quantum dots [21]. The atomic qubit is transferred in a decay process with a time-varying coupling to a rightmoving photonic (or phononic) wave packet propagating in the waveguide, i.e., ðc g jgi 1 þ c e jei 1 Þj0i p → jgi 1 ðc g j0i p þ c e j1i p Þ where ji 1 and ji p denote the atomic and channel states. The transfer of the qubit state is then completed by

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Phonon waveguides for electromechanical circuits

Cited by 149 publications

References 38 publications

Nonlinear electromechanical resonators ~ from phonon lasing operation to nanomechanical processors

Nonlinear electromechanical resonators ~ from phonon lasing operation to nanomechanical processors

Approaching the intrinsic quality factor limit for micromechanical bulk acoustic resonators using phononic crystal tethers

Microwave Quantum States Beat the Heat

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