Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Timing constraints imposed by classical digital control systems on
  photonic implementations of measurement-based quantum computing   Most of the architectural research on photonic implementations of
measurement-based quantum computing (MBQC) has focused on the quantum resources
involved in the problem with the implicit assumption that these will provide
the main constraints on system scaling. However, the `flying-qubit'
architecture of photonic MBQC requires specific timing constraints that need to
be met by the classical control system. This classical control includes, for
example: the amplification of the signals from single-photon detectors to
voltage levels compatible with digital systems; the implementation of a control
system which converts measurement outcomes into basis settings for measuring
subsequent cluster qubits, in accordance with the quantum algorithm being
implemented; and the digital-to-analog converter (DAC) and amplifier systems
required to set these measurement bases using a fast phase modulator. In this
paper, we analyze the digital system needed to implement arbitrary one-qubit
rotations and controlled-NOT (CNOT) gates in discrete-variable photonic MBQC,
in the presence of an ideal cluster state generator, with the main aim of
understanding the timing constraints imposed by the digital logic on the analog
system and quantum hardware. We use static timing analysis of a Xilinx FPGA (7
series) to provide a practical upper bound on the speed at which the adaptive
measurement processing can be performed, in turn constraining the photonic
clock rate of the system. Our work points to the importance of co-designing the
classical control system in tandem with the quantum system in order to meet the
challenging specifications of a photonic quantum computer.

10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ