Rapid progress in building devices that exhibit quantum mechanical behavior at larger length, time, and mass scales suggests that new regimes may soon be accessible for quantum computation, communication, and Heisenberg-limited metrology. We are investigating methods for integrating disparate quantum systems, such as ensembles of atoms and microwave photons, to take best advantage of their good properties while mitigating their intrinsic challenges. This provides novel possible quantum bits and improved sensing of weak electrical and inertial signals, and may lead the way towards the observation of macroscopic quantum behavior.
Topological edge states in silicon photonics
Quantum Network using Graphene Plasmons
Testing noise inequality for classical forces
Quantum control of solid-state spin
Welcome to the Taylor Research Group
Advances in our understanding of quantum mechanics enables new technological and physical investigations that examine the fundamental connection between emergent behavior of quantum systems and computational complexity. Currently it seems that there is a discrepancy between what nature makes easy and hard: classical physics and quantum mechanics disagree on this point. Thus measurement is easy in classical systems and difficult in quantum systems, while certain computational problems, such as simulating quantum systems and factoring large numbers, appear to be easier for quantum systems than classical systems. Our group works towards a deeper understanding of this classical-quantum divide, hoping to determine a constructive approach towards larger and larger quantum systems. We focus on three main research areas: hybrid quantum systems, applications of quantum information science, and fundamental questions about the limits of quantum and classical behavior.
Advances in nonlinear photonics — particularly photons interacting at the single photon level — enable new approaches to quantum simulation and quantum computation in which photons are the primary carriers of quantum information. Of particular interest to our effort are superconducting circuits, which provide a new paradigm for doing quantum simulation and computation with photons in the microwave domain. Our efforts are focused on realizing many-body states of light beyond fractional quantum Hall through these revolutionary new approaches.
The coupling between optical and mechanical degrees of freedom at the quantum level leads to novel phenomena such as radiation pressure cooling/amplification and optical spring effect. The back action of photons can also affect the dynamics of the mechanical oscillator dramatically in a regime where the mechanical motion of is comparable to the quantum noise. The understanding and the control of quantum noise in this system is crucial to fundamental study such as the coherence and dynamics of mechanical oscillators and to application such as high precision measurement and quantum information processing.
This research work involves the investigation of methods for the coherent manipulation of spins in systems of coupled quantum dots. In particular, we are interested in identifying mechanisms that enable rapid electrical control and entanglement of electron spin qubits. These capabilities are central to the realization of spin-based quantum information processing.
We are interested in an alternative approach to circuit-based quantum computation, premised on the notion that simulating interesting Hamiltonian systems can solve challenging computational problems.
We focuse on a technique for preparing ground states of such Hamiltonians, by simulating their interaction with an infinitely large (yet very simple) 'bath'.
September 15, 2018
Scaling up NISQ-era quantum computers from individual qubits is a challenging control problem. Limitations arise due to imperfect fabrications leading to variability across devices as well as because most techniques for qubit initialization are semi-automated or rely on human heuristics.
September 15, 2018Measuring the quantum nature of the gravitational field is a dream going back to the earliest days of relativity and quantum mechanics.
August 01, 2018
In the near future, quantum computers at their early development stages will likely be available only at a few leading research facilities. Others who wish to access the quantum computers may still do so via delegated quantum computation schemes.
April 10, 2018
Light is a paradigmatic quantum field, with individual excitations -- photons -- that are the most accessible massless particles known. However, their lack of mass and extremely weak interactions means that typically the thermal description of light is that of blackbody radiation.
April 10, 2018
Photonic systems are among the most promising avenues to perform quantum simulations by emulating the dynamics of the physical problems of interest in a well-controllable photonic platform. However, unlike most bosonic systems, the particle number in photonic systems is usually not conversed dur