Phonons, Photons and Qubits: Perspectives from Circuit QED and Optomechanics

Date :From 2016-06-06 To 2016-06-24
Advisory committee :Changpu Sun (CSRC), Jianqiang You (CSRC)
Local coordinators :
International coordinators :Aashish A. Clerk(McGill), Liang Jiang(Yale), Florian Marquardt(Erlangen), Yingdan Wang(ITP-CAS), Yong Li(CSRC)


Subject and purpose
In the last decades, advances in nano-technology have stimulated growing interests in exploring quantum phenomena in solid-state systems from mesoscopic to the macroscopic scale. Among them, most prominent examples are circuit QED based on superconducting circuits and optomechanics, which have great potential to achieve ambitious goals in quantum information processing, quantum simulation, ultra-sensitive detection, as well as addressing fundamental issues in quantum physics.
In particular, superconducting circuits has developed one of the most promising platforms to implement scalable architectures for quantum information processing, as highlighted by the recent achievement in quantum error correction threshold and the remarkable coherence time in 3D cavity. Optomechanics systems has also achieved important milestones into the quantum regime, such as reaching the ground state of the mechanical motion and the coupling of optical and microwave fields via mechanical motion. Furthermore, both systems have demonstrated versatile coupling ability to other quantum systems such as cold atoms, impurity ensembles and semiconductor quantum devices. Such hybrid systems are expected to have great potential for quantum state engineering.
We propose a program entitled “Phonons, Photons and Qubits: Perspectives from Circuit QED and Optomechanics”, which aims to stimulate the interaction between the two fields, who share many conceptual goals and methodologies, as well as overlap significantly in their physical implementations. We expect the program will bring together the leading scientists in these two fields to further advance the understanding of various quantum phenomena and their applications in quantum state engineering.
The program will be held at KITP in China. Active international and domestic researchers in this field will be invited to station at KITPC for extended time periods, so that they can exchange expertise effectively and have intense discussions on a continuous basis, through which collaborations at different scales and levels on interesting projects will be stimulated. It is worth to mention that there is already a sizable community in China working on the theoretical aspect of these fields, which has made considerable progresses. Most recently,several new laboratories have also been built up in a few top-class Chinese institutions. It is thus highly desirable to have an opportunity to strengthen communications and initiate new collaborations internationally.
The main subjects of the program include:
·             Non-classical state generation, including the reservoir engineering approach.
·             Many-body physics and nonlinear physics in optomechanics and superconducting devices, as well as their application to quantum simulation.
·             Quantum error correction with circuit QED.
·             Quantum metrology and precision measurements in optomechanical devices, including gravitational wave detectors.
·             Hybrid cavity optomechanical and circuit QED systems.
·             Holonomic quantum computation with superconducting circuits.
·             Scalable quantum information processing with superconducting devices.
·             Material research, characterization and optimization of device performance.
·             Implementation of new architectures and functionalities.
Program’s size and duration
Total duration: 4 weeks including about one week conference (co-sponsored with Beijing CSRC) with higher intensity of talks
Size: about 50 key participants including the conference.
The conference Link: