Nanoscale torsion-free photonic crystal pressure sensor with ultra-high sensitivity based on side-coupled piston-type microcavity

Yang, Daquan; Tian, Huiping; Wu, Nannan; Yang, Yi; Ji, Yuefeng

doi:10.1016/j.sna.2013.04.022

Cited by 38 publications

(23 citation statements)

References 42 publications

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“…Minimum detectable force is shown in figure 6.6d and is of the order of 10 −7 N which compares rather well with the high resolution PhC force sensors [153,154] exploiting coherent light. However, these schemes use significantly larger input power while in our results not only is the pulse power (1 ph/pulse) low but the average power (10 −10 W), which is defined by the emission rate of the current single photon sources (∼ GHz), is also low.…”

Section: Kn Msupporting

confidence: 66%

Quantum measurement and control in single-photon opto-mechanics

Basiri-Esfahani¹

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Quantum opto-mechanics is a fast moving, broad research field which aims to investigate and control the interaction of light and the quantized motion of mechanical objects and the coupling between them. This allows one to engineer the mechanical quantum state by controlling and measuring the electromagnetic field, and conversely, to control the dynamical evolution of the optical field via its interaction with a mechanical system. Mechanical resonators are accessible in many different shapes and sizes, from kilogram scales in experiments that test gravitational theories to micro-and nano-scales in resolved sideband regime, where the frequency of the mechanical resonator is larger than the bandwidth of the optical cavity. In this regime, it is possible to cool the mechanical object to the ground state which allows a high degree of control and the ability to prepare interesting non-classical states, states that could aid in investigating the quantum dynamics of macroscopic objects. The field of quantum opto-mechanics is a promising testbed for quantum control technologies, such as fundamental tests of quantum mechanics, ultra-sensitive quantum sensors for precise measurements, phonon lasing, mechanical memories with long lifetime and quantum information processing. Furthermore, experiments are progressing toward strong opto-mechanical coupling regimes with single photons. This creates a platform that can take advantage of the nonlinear optical interactions to generate highly non-classical states in such light-matter interfaces. Photonic systems working in the single photon regime will be promising for low power applications and also for implementations of quantum information and computation.Motivated by these applications, this thesis consists of theoretical studies in the context of single photonics. This includes investigating non-classical mechanical state generation and mechanically controlling the dynamical evolution of optical fields in the strong coupling regime single photon opto-mechanics and furthermore, proposing a quantum sensor using single photonics. In this regard, we employ three important formalisms to treat and measure open quantum systems with non-Gaussian input fields: the conditional and unconditional cascaded master equations, Fock-state master equations and input-output Langevin equations. In the context of opto-mechanics, the system to be investigated is composed of two optical cavities with a coupling modulated via a mechanical resonator.In one case, a sequence of single photons are irreversibly sent to one of the optical cavities. After photons go through the opto-mechanical interaction, photon counting measurements are performed on the cavity output, conditionally steering the mechanical state to a highly nonclassical Fock state. Numerical calculations are performed to predict the experimental parameters needed to generate a mechanical Fock state before the mechanical object is thermalized.In another case, the same opto-mechanical scheme is employed to conversely modify the state ...

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Section: Kn Msupporting

confidence: 66%

Quantum measurement and control in single-photon opto-mechanics

Basiri-Esfahani¹

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“…With the results from FEM and FDTD simulations plugging into the expression in [22], the wavelength shifts are calculated to be 39.7 nm/N and 30.2 nm/N for longitudinal and transverse pressure, respectively. Furthermore, with the calculated expression in [25], the minimum detectable pressure variation δF obtained is 1.08 nN and 1.43 nN in the longitudinal and transverse direction. Compared with the ring-resonator based pressure sensor demonstrated by Zhao et al [41], where the pressure sensitivity was only 0.65 nm/N, the sensitivity presented in this work is largely enhanced.…”

Section: Results and Discussion In Longitudinal And Transverse Directionsmentioning

confidence: 64%

“…The calculated structural variation rate S h-F of the top Si-strip membrane is 0.51 nm/nN. Due to the longer length of top Si-strip membrane, larger structural variation than that in [25] is obtained under the same applied pressure F. …”

Section: Structural Variation In Upright Directionmentioning

confidence: 89%

“…In addition, mechanical sensing effects of PhC structures have also been reported so far [16][17][18][19][20][21][22][23][24][25]. Xu et al [16] demonstrated a micro displacement sensor based on PhC line-defect resonant cavity structure by monitoring the intensity of transmission spectra as a token of the displacement.…”

Section: Introductionmentioning

confidence: 90%

“…Tung et al [23] investigated the strain sensing effect in modified single-defect photonic crystal nanocavity. In addition, Yang et al [25] presented the torsion-free photonic crystal pressure sensor with ultra-high sensitivity based on side-coupled piston-type microcavity. However, in these studies, the generated stress on these measurements was just taken along in one or two directions.…”

Section: Introductionmentioning

confidence: 99%

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