Effects of magnetic field on photon-induced quantum transport in a single dot-cavity system
Nzar Rauf Abdullah1,2, Aziz H Fatah1, Jabar M A Fatah1
1 Physics Department, College of Science, University of Sulaimani, Kurdistan Region, Iraq; 2 Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland
Abstract In this study, we show how a static magnetic field can control photon-induced electron transport through a quantum dot system coupled to a photon cavity. The quantum dot system is connected to two electron reservoirs and exposed to an external perpendicular static magnetic field. The propagation of electrons through the system is thus influenced by the static magnetic and the dynamic photon fields. It is observed that the photon cavity forms photon replica states controlling electron transport in the system. If the photon field has more energy than the cyclotron energy, then the photon field is dominant in the electron transport. Consequently, the electron transport is enhanced due to activation of photon replica states. By contrast, the electron transport is suppressed in the system when the photon energy is smaller than the cyclotron energy.
(Magnetotransport phenomena; materials for magnetotransport)
Corresponding Authors:
Nzar Rauf Abdullah
E-mail: nzar.r.abdullah@gmail.com
Cite this article:
Nzar Rauf Abdullah, Aziz H Fatah, Jabar M A Fatah Effects of magnetic field on photon-induced quantum transport in a single dot-cavity system 2016 Chin. Phys. B 25 114206
[1]
Imamoglu A and Yamamoto Y 1994 Phys. Rev. Lett. 72 210
[2]
Loss D and DiVincenzo D P 1998 Phys. Rev. A 57 120
[3]
DiVincenzo D P 2005 Science 309 2173
[4]
Petroff P M, Schmidt K H, Ribeiro G M, Lorke A and Kotthaus J 1997 Jpn J. Appl. Phys. 36 4068
[5]
Kouwenhoven L P and McEuen P L Single Electron Transport Through a Quantum Dot, in Nanotechnology, (ed. Gregory Timp) (New York:Springer) pp. 471-535
[6]
Fujisawa T, van der Wiel W G and Kouwenhoven L P 2000 Physica E 7 413
[7]
Kouwenhoven L P, Jauhar S, McCormick K, Dixon D, McEuen P L, Nazarov Yu V, van der Vaart N C and Foxon C T 1994 Phys. Rev. B 50 2019
[8]
Shibata K, Umeno A, Cha K M and Hirakawa K 2012 Phys. Rev. Lett. 109 077401
[9]
Ishibashi K and Aoyagi Y 2002 Physica B 314 437
[10]
Kouwenhoven L P, Jauhar S, Orenstein J, McEuen P L, Nagamune Y, Motohisa J and Sakaki H 1994 Phys. Rev. Lett. 73 3443
[11]
Guo Y J and Nie W J 2015 Chin. Phys. B 24 094205
[12]
Ye H, Peng Y W, Yu Z Y, Zhang W and Liu Y M 2015 Chin. Phys. B 24 114202
[13]
Maksym P A and Chakraborty T 1990 Phys. Rev. Lett. 65 108
[14]
van der Wiel W G, De Franceschi S, Elzerman J M, Fujisawa T Tarucha S and Kouwenhoven L P 2002 Rev. Mod. Phys. 75 1
[15]
Thomas I 2010 Semiconductor Nanostructures (New York:Oxford University Press)
[16]
Abdullah N R, Tang C S and Gudmundsson V 2010 Phys. Rev. B 82 195325
[17]
Hagenmüller D and Ciuti C Phys. Rev. Lett. 109267403
[18]
Maissen C, Scalari G, Valmorra F, Beck M, Faist J, Cibella S, Leoni R, Reichl C, Charpentier C and Wegscheider W 2014 Phys. Rev. B 90 205309
[19]
Abdullah N R 2015 Cavity-photon Controlled Electron Transport through Quantum Dots and Waveguide Systems (PhD Thesis:University of Iceland, Reykjavik, Iceland)
[20]
Nakajima S 1958 Prog. Theor. Phys. 20 948
[21]
Zwanzig R 1960 J. Chem. Phys. 33 1338
[22]
Abdullah N R, Tang C S, Manolescu A and Gudmundsson V 2016 ACS Photonics 3 249
Qubits based on semiconductor quantum dots Xin Zhang(张鑫), Hai-Ou Li(李海欧), Ke Wang(王柯), Gang Cao(曹刚), Ming Xiao(肖明), Guo-Ping Guo(郭国平). Chin. Phys. B, 2018, 27(2): 020305.
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
