Minimal Models for Nonreciprocal Amplification Using Biharmonic Drives

Kamal, Archana; Metelmann, A.

doi:10.1103/physrevapplied.7.034031

Cited by 39 publications

(27 citation statements)

References 38 publications

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“…Such directional amplification has been experimentally demonstrated in Josephson circuits [6], [11], and in optomechanical microtoroid cavities [20][21], while it has been shown that a generic system of three harmonic modes, coupled parametrically through two pump harmonics, serves as a minimal system for directional amplification [12]. In all examples discussed so far, we considered operation in the red-detuned regime, which is the most commonly considered in optomechanical systems for non-reciprocity and isolation.…”

Section: Non-reciprocal Amplificationmentioning

confidence: 99%

“…Microring resonators with a traveling wave index modulation, acting as an angular momentum bias, have been proposed as an efficient way to break reciprocity in compact devices [6]- [7], a concept that has been realized in a discretized arrangement of resonators with out-of-phase temporal modulations [8]- [9]. In addition, parametrically coupled multimode systems have been also shown to perform non-reciprocal frequency conversion and amplification [10]- [12], for example based on Josephson junctions [13]. Recently, it has been realized that optomechanical coupling can also be used to impart the required form of synthetic gauge required to induce electromagnetic non-reciprocity at optical [14]- [22] and microwave frequencies [23], [24].…”

Section: Introductionmentioning

confidence: 99%

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Optical Nonreciprocity Based on Optomechanical Coupling

et al. 2017

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Section: Non-reciprocal Amplificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical Nonreciprocity Based on Optomechanical Coupling

et al. 2017

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“…In addition, the quantitative agreement between data and theory we show here will be crucial for further optimizing performance within experimental constraints as well as developing more complex multimode systems. While we have pursued ideal isolation, which preserves quantum signals, the parameters we demonstrate here are also well suited for implementing nonreciprocal amplification schemes [11,15,18,20,25,36].…”

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confidence: 99%

Demonstration of Efficient Nonreciprocity in a Microwave Optomechanical Circuit

et al. 2017

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The ability to engineer nonreciprocal interactions is an essential tool in modern communication technology as well as a powerful resource for building quantum networks. Aside from large reverse isolation, a nonreciprocal device suitable for applications must also have high efficiency (low insertion loss) and low output noise. Recent theoretical and experimental studies have shown that nonreciprocal behavior can be achieved in optomechanical systems, but performance in these last two attributes has been limited. Here, we demonstrate an efficient, frequency-converting microwave isolator based on the optomechanical interactions between electromagnetic fields and a mechanically compliant vacuum-gap capacitor. We achieve simultaneous reverse isolation of more than 20 dB and insertion loss less than 1.5 dB. We characterize the nonreciprocal noise performance of the device, observing that the residual thermal noise from the mechanical environments is routed solely to the input of the isolator. Our measurements show quantitative agreement with a general coupled-mode theory. Unlike conventional isolators and circulators, these compact nonreciprocal devices do not require a static magnetic field, and they allow for dynamic control of the direction of isolation. With these advantages, similar devices could enable programmable, high-efficiency connections between disparate nodes of quantum networks, even efficiently bridging the microwave and optical domains. DOI: 10.1103/PhysRevX.7.031001 Subject Areas: Acoustics, Condensed Matter Physics, Quantum PhysicsMany branches of physics and engineering employ nonreciprocal devices to route signals along desired paths of measurement networks. Conceptually, the simplest nonreciprocal element is the isolator, a two-port device that transmits signals from the first to the second port but strongly attenuates in the reverse direction [1]. Placing an ideal isolator (or its close relative, the circulator) between two systems allows the first system to influence the second but not vice versa. This nonreciprocal functionality enables, for example, telecommunication antennas to transmit and receive signals at the same time. Another example relevant for future applications is quantum signal processing, where the strict demands of quantum measurement require isolators with high performance in several metrics, including not only large isolation, but also high efficiency and low noise [2].Well-established technology uses magnetic materials to achieve nonreciprocity for both microwave and optical frequencies [3][4][5]. While these conventional devices have enabled much of the progress in classical and quantum signal processing, overcoming their limitations could lead to exciting new developments in both areas. For example, these components are typically bulky, not chip compatible, and incompatible with superconducting technology because they require strong magnetic fields. Signal losses due to these conventional nonreciprocal devices have now become the bottleneck for the overall efficiency of,...

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“…As a crucial element in signal readout and information processing, directional optical amplifiers (with minimal noises from the output port) have also been proposed and studied, in microwave circuits [44,45] or a non- * jinghui73@foxmail.com Hermitian time-Floquet device [46]. In a recent experiment, a reconfigurable optical device was demonstrated [47], having switchable functions as either a circulator or a directional amplifier [48,49]. Directional amplification of microwave signals has also been experimentally demonstrated in a multi-mode COM system [50].…”

Section: Introductionmentioning

confidence: 99%

Nonreciprocal Phonon Laser

et al. 2018

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We propose nonreciprocal phonon lasing in a coupled cavity system composed of an optomechanical and a spinning resonator. We show that the optical Sagnac effect leads to significant modifications in both the mechanical gain and the power threshold for phonon lasing. More importantly, the phonon lasing in this system is unidirectional, that is the phonon lasing takes place when the coupled system is driven in one direction but not the other. Our work establishes the potential of spinning optomechanical devices for low-power mechanical isolation and unidirectional amplification. This provides a new route, well within the reach of current experimental abilities, to operate cavity optomechanical devices for such a wide range of applications as directional phonon switches, invisible sound sensing, and topological or chiral acoustics.

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Minimal Models for Nonreciprocal Amplification Using Biharmonic Drives

Cited by 39 publications

References 38 publications

Optical Nonreciprocity Based on Optomechanical Coupling

Optical Nonreciprocity Based on Optomechanical Coupling

Demonstration of Efficient Nonreciprocity in a Microwave Optomechanical Circuit

Nonreciprocal Phonon Laser

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