Topological Phases of Sound and Light
- V. Peano, C. Brendel, M. Schmidt, F. Marquardt
- Physics
- 18 September 2014
Topological states of matter are particularly robust, since they exploit global features insensitive to local perturbations. In this work, we describe how to create a Chern insulator of phonons in…
Topological Quantum Fluctuations and Traveling Wave Amplifiers
- V. Peano, M. Houde, F. Marquardt, A. Clerk
- Physics
- 14 April 2016
It is now well-established that photonic systems can exhibit topological energy bands; similar to their electronic counterparts, this leads to the formation of chiral edge modes which can be used to…
Confinement-induced resonances for a two-component ultracold atom gas in arbitrary quasi-one-dimensional traps
- V. Peano, M. Thorwart, C. Mora, R. Egger
- Physics
- 13 June 2005
We solve the two-particle s-wave scattering problem for ultracold atom gases confined in arbitrary quasi-one-dimensional (1D) trapping potentials, allowing for two different atom species. As a…
Pseudomagnetic fields for sound at the nanoscale
- C. Brendel, V. Peano, O. Painter, F. Marquardt
- PhysicsProceedings of the National Academy of Sciences
- 14 July 2016
P pseudomagnetic fields for sound waves are created by simple geometrical modifications of an existing and experimentally proven phononic crystal design, the snowflake crystal, which is robust, scalable, and well-suited for a variety of excitation and readout mechanisms, among them optomechanical approaches.
L lines, C points and Chern numbers: understanding band structure topology using polarization fields
- Thomas Fösel, V. Peano, F. Marquardt
- Physics
- 23 March 2017
Topology has appeared in different physical contexts. The most prominent application is topologically protected edge transport in condensed matter physics. The Chern number, the topological invariant…
Snowflake phononic topological insulator at the nanoscale
- C. Brendel, V. Peano, O. Painter, F. Marquardt
- Physics
- 18 January 2018
We show how the snowflake phononic crystal structure, which recently has been realized experimentally, can be turned into a topological ins ulator for mechanical waves. This idea, based purely on…
Optomechanical creation of magnetic fields for photons on a lattice
- M. Schmidt, S. Kessler, V. Peano, O. Painter, F. Marquardt
- Physics
- 26 February 2015
Recently, there has been growing interest in the creation of artificial magnetic fields for uncharged particles, such as cold atoms or photons. These efforts are partly motivated by the resulting…
Topological phase transitions and chiral inelastic transport induced by the squeezing of light
- V. Peano, M. Houde, C. Brendel, F. Marquardt, A. Clerk
- PhysicsNature Communications
- 6 August 2015
It is shown how the squeezing of light can lead to the formation of qualitatively new kinds of topological states, characterized by non-trivial Chern numbers, and exhibit protected edge modes, which give rise to chiral elastic and inelastic photon transport.
Intracavity Squeezing Can Enhance Quantum-Limited Optomechanical Position Detection through Deamplification.
- V. Peano, H. Schwefel, C. Marquardt, F. Marquardt
- PhysicsPhysical Review Letters
- 9 December 2015
This work presents a fundamentally different approach where the squeezing is created directly inside the cavity by a nonlinear medium, and can be straightforwardly extended to quantum nondemolition qubit detection.
Anderson localization of composite excitations in disordered optomechanical arrays
- T. F. Roque, V. Peano, O. Yevtushenko, F. Marquardt
- Physics
- 14 July 2016
Optomechanical (OMA) arrays are a promising future platform for studies of transport, many-body dynamics, quantum control and topological effects in systems of coupled photon and phonon modes. We…
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