Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Robust Two-Qubit Gates for Exchange-Coupled Qubits   We present composite pulse sequences that perform fault-tolerant two-qubit
gate operations on exchange-only quantum dot spin qubits in various
experimentally relevant geometries. We show how to perform dynamically
corrected two-qubit gates in exchange-only systems with the leading hyperfine
error term cancelled. These pulse sequences are constructed to conform to the
realistic experimental constraint of strictly non-negative couplings. We
establish that our proposed pulse sequences lead to several orders of magnitude
improvement in the gate fidelity compared with their uncorrected counterparts.
Together with single-qubit dynamically corrected gates, our results enable
noise-resistant universal quantum operations with exchange-only qubits.

31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga