5,951 research outputs found
Magnetic ordering of nitrogen-vacancy centers in diamond via resonator-mediated coupling
Nitrogen-vacancy centers in diamond, being a promising candidate for quantum
information processing, may also be an ideal platform for simulating many-body
physics. However, it is difficult to realize interactions between
nitrogen-vacancy centers strong enough to form a macroscopically ordered phase
under realistic temperatures. Here we propose a scheme to realize long-range
ferromagnetic Ising interactions between distant nitrogen-vacancy centers by
using a mechanical resonator as a medium. Since the critical temperature in the
long-range Ising model is proportional to the number of spins, a ferromagnetic
order can be formed at a temperature of tens of millikelvin for a sample with
nitrogen-vacancy centers. This method may provide a new platform for
studying many-body physics using qubit systems.Comment: 5 pages, 4 figure
- …