Zobrazeno 1 - 10
of 18
pro vyhledávání: '"C. D. Hamley"'
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Ultracold atomic gases with collisional interactions allow the exploration of quantum many-body physics. Here, the authors vary over time the contributions to the interaction energy to coherently control the spin state of an atomic Bose gas, thereby
Externí odkaz:
https://doaj.org/article/cff59a6264e34b6b8bf820ee12096eb1
Autor:
D. Grzonka, E. Tardiff, Nathan Jones, E. Nottet, Cole Meisenhelder, G. Khatri, D. Martinez Zambrano, X. Fan, Gerald Gabrielse, E. A. Hessels, W.S. Kolthammer, C. D. Hamley, E. Novitski, Tharon Morrison, C. H. Storry
Publikováno v:
Nuclear instruments & methods in physics research / A 977, 164279-(2020). doi:10.1016/j.nima.2020.164279
High-accuracy spectroscopic comparisons of trapped antihydrogen atoms ($\overline{\text{H}}$) and hydrogen atoms ($\text{H}$) promise to stringently test the fundamental CPT symmetry invariance of the standard model of particle physics. ATRAP's neste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3b959287592a12cdb61bf376cad5650
Autor:
C. H. Storry, E. Nottet, E. A. Hessels, E. Tardiff, Cole Meisenhelder, D. Grzonka, N. Jones, Marcin Zieliński, Gerald Gabrielse, Dylan C. Yost, Samuel Ronald, D. Martinez Zambrano, G. Khatri, Bartosz Głowacz, T. D. G. Skinner, S. A. Lee, C. D. Hamley, Cory Rasor, Tharon Morrison
We present a Lyman-α laser developed for cooling trapped antihydrogen. The system is based on a pulsed Ti:sapphire laser operating at 729 nm that is frequency doubled using an LBO crystal and then frequency tripled in a Kr/Ar gas cell. After frequen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c847fa89fc1e64fe1235a52b53ffc672
https://ruj.uj.edu.pl/xmlui/handle/item/56446
https://ruj.uj.edu.pl/xmlui/handle/item/56446
Autor:
C. D. Hamley, Martin Anquez, Michael Chapman, X. Y. Yang, B. J. Land, Bryce Robbins, Thai M. Hoang
Publikováno v:
Nature Communications
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Atomic spins are usually manipulated using radio frequency or microwave fields to excite Rabi oscillations between different spin states. These are single-particle quantum control techniques that perform ideally with individual particles or non-inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0df1893dd9de97aaee0634ed2cff567d
https://pubmed.ncbi.nlm.nih.gov/27044675
https://pubmed.ncbi.nlm.nih.gov/27044675
Publikováno v:
Nature Communications. 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a50ab538cd5f0bcafb8eb4eed4632d3
https://doi.org/10.1038/ncomms2849
https://doi.org/10.1038/ncomms2849
Autor:
D. W. Fitzakerley, K. Marable, T. D. G. Skinner, Matthew Weel, M. C. George, N. Jones, W. Oelert, E. A. Hessels, Marcin Zieliński, E. Tardiff, C. H. Storry, C. D. Hamley, Gerald Gabrielse, D. Grzonka
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 49:064001
Four billion positrons (e+) are accumulated in a Penning–Ioffe trap apparatus at 1.2 K and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b82ffb69cf9006ec1a7e00a68fceefe
https://doi.org/10.1088/0953-4075/49/6/064001
https://doi.org/10.1088/0953-4075/49/6/064001
We demonstrate dynamic stabilization of an unstable strongly interacting quantum many-body system by periodic manipulation of the phase of the collective states. The experiment employs a spin-1 atomic Bose condensate initialized to an unstable (hyper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52372f653d965b063bd16c8c8b516ce2
http://arxiv.org/abs/1209.4363
http://arxiv.org/abs/1209.4363
Publikováno v:
Nature communications. 3
A pendulum prepared perfectly inverted and motionless is a prototype of unstable equilibrium and corresponds to an unstable hyperbolic fixed point in the dynamical phase space. Here, we measure the non-equilibrium dynamics of a spin-1 Bose-Einstein c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8250038d229439866823c08d001d919
https://pubmed.ncbi.nlm.nih.gov/23132019
https://pubmed.ncbi.nlm.nih.gov/23132019
Using squeezed states it is possible to surpass the standard quantum limit of measurement uncertainty by reducing the measurement uncertainty of one property at the expense of another complementary property. Squeezed states were first demonstrated in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44cc592805a5b0aade850aad9cc6e033
http://arxiv.org/abs/1111.1694
http://arxiv.org/abs/1111.1694
We have observed sub-Poissonian spin correlations generated by collisionally induced spin mixing in a spin-1 Bose-Einstein condensate. We measure a quantum noise reduction of -7 dB (-10 dB corrected for detection noise) below the standard quantum lim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52cc73e705a3c7f306aea02ee90c99ec
http://arxiv.org/abs/1109.2185
http://arxiv.org/abs/1109.2185