Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum capacity and codes for the bosonic loss-dephasing channel   Bosonic qubits encoded in continuous-variable systems provide a promising
alternative to two-level qubits for quantum computation and communication. So
far, photon loss has been the dominant source of errors in bosonic qubits, but
the significant reduction of photon loss in recent bosonic qubit experiments
suggests that dephasing errors should also be considered. However, a detailed
understanding of the combined photon loss and dephasing channel is lacking.
Here, we show that, unlike its constituent parts, the combined loss-dephasing
channel is non-degradable, pointing towards a richer structure of this channel.
We provide bounds for the capacity of the loss-dephasing channel and use
numerical optimization to find optimal single-mode codes for a wide range of
error rates.

20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an