Rare-earth below 1 K

Electromagnetically Induced Transparency

N. Kukharchyk, D. Sholokhov, O. Morozov, S. L. Korableva, A. A. Kalachev and P. A. Bushev "Electromagnetically Induced Transparency in a mono-isotopic ¹⁶⁷Er:⁷LiYF₄ crystal below 1 Kelvin: microwave photonics approach", Opt. Express 28, 29166-29177 (2020)

Optical coherence

N. Kukharchyk, D. Sholokhov, A. A. Kalachev, and P. A. Bushev "Enhancement of optical coherence in 167Er:Y2SiO5; crystal at sub-Kelvin temperatures", arXive 1910.03096

N. Kukharchyk, D. Sholokhov, O. Morozov, S. L. Korableva, J. H.Cole, A. A. Kalachev and P. A. Bushev, "Optical vector network analysis of ultra-narrow optical transitions in monoisotopic ErLYF crystal", Optics Letters 42, 935 (2018)

N. Kukharchyk, D. Sholokhov, S. L. Korableva, A. A. Kolachev and P. A. Bushev, "Optical coherence of Er:LYF below 1 Kelvin", New J. Phys. 20, 023044 (2018)

J. Becker, B. Pingault, D. Gross, M. Gündogan, N. Kukharchyk, M. Markham, A. Edmonds, M. Atatüre, P. Bushev and Ch. Becher, "All-optical control of the silicon-vacancy spin in diamond at millikelvin temperatures", Phys. Rev. Lett.120, 053603 (2018)

Microwave coherence

S. Probst, N. Kukharchyk, H. Rotzinger, A. Tkalcec, S. Wünsch, A. D. Wieck, M. Siegel, A. V. Ustinov, P. A. Bushev. "Hybrid quantum circuit with implanted erbium ions", Appl. Phys. Lett. 105 (2014) 162404. DOI: 10.1063/1.4898696

A. Tkalcec, S. Probst, D. Rieger, H. Rotzinger, S. Wünsch, N. Kukharchyk, A. D. Wieck, M. Siegel, A. V. Ustinov, P. Bushev. "Strong coupling of an Er3+-doped YAlO3 crystal to a superconducting resonator", Phys. Rev. B 90 (2014) 075112. DOI: 10.1103/PhysRevB.90.075112