Selected recent publications

S. Cundiff and M. Kira (Eds.), Semiconductor Quantum Science and Technology, Volume 105, (Academic Press, 2020) [link].

M. Kira and S.W. Koch, Semiconductor quantum optics, (Cambridge University Press, 2012) [link].
Book reviews by:

M. Borsch, C. P. Schmid, L. Weigl, S. Schlauderer, N. Hofmann, C. Lange, J. T. Steiner, S. W. Koch, R. Huber, M. Kira, Super-resolution lightwave tomography of electronic bands in quantum materials, Science 370, 1204-1207 (2020). [link]
A new way to measure the band structure of quantum materials.
Q. Wen, Y. Wu, P. Wang, D. Laleyan, D. Bayerl, E. Kioupakis, Z. Mi, and M. Kira, Hyperspectral absorption of semiconductor monolayer crystals, Appl. Phys. Lett. 116, 181103 (2020). [link]
K. Cong, W. Jiang, B.E. Anthonio, G. T. Noe, H. Liu, H. Kataura, M. Kira, and J. Kono, Quantum-memory-enabled ultrafast optical switching in carbon nanotubes, ACS Photonics 7, 1382–1387 (2020). [link]

J. Wang, J. Ardelean, Y. Bai, A. Steinhoff, M. Florian, F. Jahnke, X. Xu, M. Kira, J. Hone, and X.-Y. Zhu, Optical generation of high carrier densities in 2D semiconductor heterobilayers, Sci. Adv. 5, eaax0145 (2019). [link]

F. Langer, C.P. Schmid, S. Schlauderer, M. Gmitra, J. Fabian, P. Nagler, C. Schüller, T. Korn, P.G. Hawkins, J. T. Steiner, U. Huttner, S. W. Koch, M. Kira, and R. Huber, Lightwave valleytronics in a monolayer of tungsten diselenide, Nature 557, 76 (2018). [link]

F. Langer, M. Hohenleutner, U. Huttner, S.W. Koch, M. Kira, and R. Huber, Symmetry-controlled temporal structure of high-harmonic carrier fields from a bulk crystal, Nature Photonics 11, 227 (2017). [link]

F. Langer, M. Hohenleutner, C. Schmid, C. Poellmann, P. Nagler, T. Korn, C. Schüller, M. S. Sherwin, U. Huttner, J. T. Steiner, S. W. Koch, M. Kira, and R. Huber, Lightwave-driven quasiparticle collisions on a sub-cycle timescale, Nature 533, 225 (2016). [link]
Concept of a quasiparticle collider is demonstrated.
T. Maag, A. Bayer, S. Baierl, M. Hohenleutner, T. Korn, C. Schüller, D. Schuh, D. Bougeard, C. Lange, R. Huber, M. Mootz, J. E. Sipe, S. W. Koch, and M. Kira, Coherent cyclotron motion beyond Kohn’s theorem, Nat. Phys. 12, 119 (2016). [link]
Coulomb interaction induced nonlinearity among Landau electrons is identified.

M. Hohenleutner, F. Langer, O. Schubert, M. Knorr, U. Huttner, S.W. Koch, M. Kira, and R. Huber, Real-time observation of interfering crystal electrons in high-harmonic generation, Nature 523, 572 (2015). [link]
Optically induced quantum interference is detected among terahertz-field accelerated electrons.
M. Kira, Coherent quantum depletion of an interacting atom condensate, Nat. Comm. 6, 6624 (2015).[link]
Semiconductors aspects are shown to quantitatively explain strong many-body interactions in atomic Bose-Einstein condensates.
M. Kira, Hyperbolic Bloch equations: atom-cluster kinetics of an interacting Bose gas, Ann. Phys. 356, 185 (2015). [link]
Connection between semiconductors and strongly interacting atomic BECs is established.
O. Vänskä, I. Tittonen, S.W. Koch, and M. Kira, Coherent terahertz control of vertical transport in semiconductor heterostructures, Phys. Rev. Lett. 114, 116802 (2015). [link]
A scheme to transport particle correlations, instead of particles, is proposed.

A.E.Almand-Hunter, H. Li, S.T. Cundiff, M. Mootz, M. Kira, and S.W. Koch, Quantum droplets of electrons and holes, Nature 506, 471 (2014). [link]
Cover story, a new quasiparticle – the dropleton – is reported by applying quantum spectroscopy.
C. Berger, U. Huttner, M. Mootz, M. Kira, S.W. Koch, J.-S. Tempel, M. Aßmann, M. Bayer, A.M. Mintairov, and J.L. Merz, Quantum-memory effects in the emission of quantum-dot microcavities, Phys. Rev. Lett. 113, 093902 (2014). [link]
Quantum spectroscopy detects a quantum-memory effect in microdisk lasers.
O. Schubert, M. Hohenleutner, F. Langer, B. Urbanek, C. Lange, U. Huttner, D. Golde, T. Meier, M. Kira, S.W. Koch, and R. Huber, Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations, Nat. Phot. 8, 119 (2014). [link]
The role of optical Bloch equations on high-harmonic generation is identified.
D. Jameson, J. L. Tomaino, Y.-S. Lee, G. Khitrova, H. M. Gibbs, C. N. Böttge, A. C. Klettke, M. Kira, and S. W. Koch, Direct measurement of light–matter energy exchange inside a microcavity, Optica 1, 276 (2014).[link]
Direct measurement of light-matter interaction is established.

W.D. Rice, J. Kono, S. Zybell, S. Winnerl, J. Bhattacharyya, H. Schneider, M. Helm, B. Ewers, A. Chernikov, M. Koch, S. Chatterjee, G. Khitrova, H.M. Gibbs, L. Schneebeli, B. Breddermann, M. Kira, and S.W. Koch, Observation of Forbidden Exciton Transitions Mediated by Coulomb Interactions in Photoexcited Semiconductor Quantum Wells, Phys. Rev. Lett. 110, 137404 (2013). [link]
Coulomb-mediated symmetry breaking is demonstrated to introduce 1s-to-2s transitions.
J.L. Tomaino, A.D. Jameson, Y.-S. Lee, G. Khitrova, H.M. Gibbs, A.C. Klettke, M. Kira, and S.W. Koch, Terahertz Excitation of a Coherent Lambda-Type Three-Level System of Exciton-Polariton Modes in a Quantum-Well Microcavity, Phys. Rev. Lett. 108, 267402 (2012). [link]
A Lambda system is identified in excitonic microcavity.
M. Kira, S.W. Koch, R.P. Smith, A.E. Hunter, and S.T. Cundiff, Quantum spectroscopy with Schrödinger-cat states, Nat. Phys. 7, 799 (2011). [link]
Experimentally feasible framework for quantum spectroscopy is introduced.
F. Blanchard, D. Golde, F.H. Su, L. Razzari, G. Sharma, R. Morandotti, T. Ozaki, M. Reid, M. Kira, S.W. Koch, and F. A. Hegmann, Effective Mass Anisotropy of Hot Electrons in Nonparabolic Conduction Bands of n-Doped InGaAs Films Using Ultrafast Terahertz Pump-Probe Techniques, Phys. Rev. Lett. 107, 107401 (2011). [link]
Direct measurement of effective mass anisotropy is demonstrated.