Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Breaking Lorentz reciprocity with frequency conversion and delay   We introduce a method for breaking Lorentz reciprocity based upon the
non-commutation of frequency conversion and delay. The method requires no
magnetic materials or resonant physics, allowing for the design of scalable and
broadband non-reciprocal circuits. With this approach, two types of gyrators
--- universal building blocks for linear, non-reciprocal circuits --- are
constructed. Using one of these gyrators, we create a circulator with > 15 dB
of isolation across the 5 -- 9 GHz band. Our designs may be readily extended to
any platform with suitable frequency conversion elements, including
semiconducting devices for telecommunication or an on-chip superconducting
implementation for quantum information processing.

19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph