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量子通讯与量子计算. 林秀敏. 福建师范大学物理与光电信息科技学院. 目 录. 二、量子信息的特性. 一、引 言. 四、量子通讯. 三、量子密码. 六、结束语. 五、量子计算机. 一、引言.  信息科学面临挑战. 信息科学在改善人类生活质量和推进社会文明发展中发挥着无可比拟和令人惊叹的作用,但在信息化的进程中人类也面临越来越严重的问题,如当今信息系统的处理能力已接近极限值的程度。.  现有计算机的运算速度能无限制地增长吗?. Gordon Moore, Intel 公司的创始人之一.

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Gordon Moore, Intel.

1965-1995Moores Law.


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K1

K

K

K


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RSA

MD5SHA1 20048MD5HAVAL128MD4RIPEMD


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  • 200527SHA12010SHA256SHA512SHA1


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20


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C

B

A

A,B,C,


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D1

D2


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B

A

EPR

EPR

EPR


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20

21


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0101


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z=x+iyxy


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()

EPR


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()()


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12513


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,


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1Quantum Teleportation


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1993IBMBennetPhysical

Review LettersEPR(

)


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Teleported state

Classical information

ALICE

BSM

initial state

U

Entangled pair

BOB

EPR-source


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()

()()


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1997()NatureNature2021

1998Physical Review Letters1998ScienceNature


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2

(1)

(2)


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B

A

D

C

3

()

(1);(2)


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2004 6 3 ,BBN ,,10


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01

01

00,01,1011()

00,01,10,11()


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N

2N

2N

2NN

N=250,


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N

N2N

N2N


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Shor

19941998

RSA

127229

29083

(NP)


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N logN

N=129199416008

N=250 8105

N=10001025()


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ShorNlogN ()

Shor

RSA


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100(Grover)

Grove

N

106


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:DES(the data encryption standard)(256=71016)

1061000Grove4

Grove

Grove


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NO!


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(decoherence)


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QED


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.


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:973


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Group

10


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1

2QED

3

4

5


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  • Xiu-Min Lin et al., One-step implementation of multiqubit controlled phase flip gate, accepted by Phys. Rev. A

  • Yun-Feng Xiao, Xiu-Min Linet al., Realizing quantum controlled phase flip through cavity QED, Phys. Rev. A 70, 042314 (2004)

  • Peng Xue, Chao Han, Bo Yu, Xiu-Min Linet al., Robust generation of entanglement and quantum communication with atoms in optical cavities, Phys. Rev. A 69, 052318 (2004)

  • Xiu-Min Lin et al., Implementing high efficiency quantum controlled phase gate betweem long distance atoms, J. Opt. Soc. Am. B Vol. 22, 1547 (2005)

  • Li Hongcai et al., Generation of Surperpositions of Squeezed State Via Raman Interaction, Optics Communications 197, 97-101, 2001

  • Xiu-Min Lin et al., Scheme for implementing quantum dense coding via cavity QED, Phys. Lett. A 313, 351 (2003)


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7. Xiu-Min Lin et al., Generation of polarization-entangled photon pairs through cavity-assisted interaction, accepted by Phys. Lett. A

8. Huang Zhiping, Li Hongcai A Proposal of Many-party Controlled Teleportation for Multi-qubits entangled W state, Chinese physics, Vol. 14No.59742005

9. Xiu Lin, Hong-Cai Li, Probabilistic teleportation of an arbitrary three particle state, accepted by Chinese Physics Vol.14No.91724 (2005

10. Xiu-Min Lin et al., Implementing entanglement swapping with trapped atoms via cavity decayChin. Phys. Lett. 21, 1525 (2004)

11. Xiu-Min Lin et al., Preparation of two-qutrit entangled state in cavity QED, Chin. Phys. Lett. 22 , 1318 (2005)

12. Chen Zhi-Hua, Xiu-Min Lin, Scheme for implementing Quantum Secrete Sharing via Cavity QED, Chinese Physics Vol.14No.91821 2005


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13. Huang Ting, Xiu-Min Lin et al., The Tangle of the Lambda-type

three level atoms and the two-mode cavity field, accepted by

Physica A.

14. Ting Huang, Xiu-Min Lin et al., The dynamic behavior of the

Lambda-type three levels atoms and the two-mode cavity field

accepted by Commun. in Theor. Phys.


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Thats all,Thank you!

Email: [email protected]


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