Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strong back-action of a linear circuit on a single electronic quantum
  channel   What are the quantum laws of electricity in mesoscopic circuits? This very
fundamental question has also direct implications for the quantum engineering
of nanoelectronic devices. Indeed, when a quantum coherent conductor is
inserted into a circuit, its transport properties are modified. In particular,
its conductance is reduced because of the circuit back-action. This phenomenon,
called environmental Coulomb blockade, results from the granularity of charge
transfers across the coherent conductor. Although extensively studied for a
tunnel junction in a linear circuit, it is only fully understood for arbitrary
short coherent conductors in the limit of small circuit impedances and small
conductance reduction. Here, we investigate experimentally the strong
back-action regime, with a conductance reduction of up to 90%. This is achieved
by embedding a single quantum channel of tunable transmission in an adjustable
on-chip circuit of impedance comparable to the resistance quantum $R_K=h/e^2$
at microwave frequencies. The experiment reveals important deviations from
calculations performed in the weak back-action framework, and matches with
recent theoretical results. From these measurements, we propose a generalized
expression for the conductance of an arbitrary quantum channel embedded in a
linear circuit.

32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph