Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurements of nanoresonator-qubit interactions in a hybrid quantum
  electromechanical system   Experiments to probe the basic quantum properties of motional degrees of
freedom of mechanical systems have developed rapidly over the last decade. One
promising approach is to use hybrid electromechanical systems incorporating
superconducting qubits and microwave circuitry. However, a critical challenge
facing the development of these systems is to achieve strong coupling between
mechanics and qubits while simultaneously reducing coupling of both the qubit
and mechanical mode to the environment. Here we report measurements of a
qubit-coupled mechanical resonator system consisting of an ultra-high-frequency
nanoresonator and a long coherence-time superconducting transmon qubit,
embedded in superconducting coplanar waveguide cavity. It is demonstrated that
the nanoresonator and transmon have commensurate energies and transmon
coherence times are one order of magnitude larger than for all previously
reported qubit-coupled nanoresonators. Moreover, we show that numerical
simulations of this new hybrid quantum system are in good agreement with
spectroscopic measurements and suggest that the nanoresonator in our device
resides at low thermal occupation number, near its ground state, acting as a
dissipative bath seen by the qubit. We also outline how this system could soon
be developed as a platform for implementing more advanced experiments with
direct relevance to quantum information processing and quantum thermodynamics,
including the study of nanoresonator quantum noise properties, reservoir
engineering, and nanomechanical quantum state generation and detection.

12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas