Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Assmann, Marc"'
Rydberg states of excitons in Cu$_2$O are known to interact strongly with other carriers in their surrounding such as other excitons, free charge carriers and static charged impurities. In cw-experiments, discriminating the individual processes is no
Externí odkaz:
http://arxiv.org/abs/2409.14960
Autor:
Rozas, Elena, Brune, Yannik, West, Ken, Baldwin, Kirk W., Pfeiffer, Loren N., Beaumariage, Jonathan, Alnatah, Hassan, Snoke, David W., Aßmann, Marc
In non-Hermitian open quantum systems, such as polariton condensates, local tailoring of gains and losses opens up an interesting possibility to realize functional optical elements. Here, we demonstrate that deliberately introducing losses via a phot
Externí odkaz:
http://arxiv.org/abs/2409.06478
Autor:
Brune, Yannik, Rozas, Elena, West, Ken, Baldwin, Kirk, Pfeiffer, Loren N., Beaumariage, Jonathan, Alnatah, Hassan, Snoke, David W., Aßmann, Marc
In recent years, quantum information science has made significant progress, leading to a multitude of quantum protocols for the most diverse applications. States carrying resources such as quantum coherence are a key component for these protocols. In
Externí odkaz:
http://arxiv.org/abs/2407.00844
Autor:
Zhai, Xiaokun, Gao, Ying, Ma, Xuekai, Xing, Chunzi, Wang, Xiao, Pan, Anlian, Assmann, Marc, Schumacher, Stefan, Gao, Tingge
Coupling of orbital and spin degrees of freedom gives rise to intriguing physical phenomena in bosonic condensates, such as formation of stripe phases and domains with vortex arrays. However, the robust locking of spin and orbital degrees of freedom
Externí odkaz:
http://arxiv.org/abs/2403.15133
Autor:
Makhonin, Maxim, Delphan, Anthonin, Song, Kok Wee, Walker, Paul, Isoniemi, Tommi, Claronino, Peter, Orfanakis, Konstantinos, Rajendran, Sai Kiran, Ohadi, Hamid, Heckötter, Julian, Aßmann, Marc, Bayer, Manfred, Tartakovskii, Alexander, Skolnick, Maurice, Kyriienko, Oleksandr, Krizhanovskii, Dmitry
Rydberg excitons (analogues of Rydberg atoms in condensed matter systems) are highly excited bound electron-hole states with large Bohr radii. The interaction between them as well as exciton coupling to light may lead to strong optical nonlinearity,
Externí odkaz:
http://arxiv.org/abs/2401.02868
We investigate the neutralization of charged defects in a Cu$_2$O crystal experimentally with a cw two-color pump-probe setup. We demonstrate that the excitation of high-lying Rydberg excitons at low densities generates an enhancement of exciton abso
Externí odkaz:
http://arxiv.org/abs/2311.03170
Autor:
Bergen, Martin, Walther, Valentin, Panda, Binodbihari, Harati, Mariam, Siegeroth, Simon, Heckötter, Julian, Aßmann, Marc
We investigate the interaction between highly excited Rydberg excitons and charged impurities in the semiconductor Cuprous Oxide. We find that it is long-ranged and based on charge-induced dipole interactions. We demonstrate that we can utilize this
Externí odkaz:
http://arxiv.org/abs/2310.11726
Autor:
Lüders, Carolin, Barkhausen, Franziska, Pukrop, Matthias, Rozas, Elena, Sperling, Jan, Schumacher, Stefan, Aßmann, Marc
In this review, we discuss the use of continuous variable spectroscopy techniques for investigating quantum coherence and light-matter interactions in semiconductor systems with ultrafast dynamics. We focus on multichannel homodyne detection as a pow
Externí odkaz:
http://arxiv.org/abs/2306.01550
We take advantage of the polariton bistability in semiconductor microcavities to estimate the interaction strength between lower exciton-polariton and dark exciton states. We combine the quasiresonant excitation of polaritons and the nominally forbid
Externí odkaz:
http://arxiv.org/abs/2305.13069
Autor:
Zhu, Changqing, Pilch, Patrick, Reinold, Anneke, Kudlacik, Dennis, Springholz, Gunther, Bonanni, Alberta, Assmann, Marc, Cinchetti, Mirko, Wang, Zhe
Publikováno v:
Physical Review MATERIALS 7, 054601 (2023)
We report on time-resolved optical and terahertz ultrafast spectroscopy of charge-carrier dynamics in the room-temperature antiferromagnetic semiconductor $\alpha $-MnTe. By optically pumping the system with 1.55 eV photons at room temperature, we ex
Externí odkaz:
http://arxiv.org/abs/2303.14183