Quantum data erasure method, system and device, and readable storage medium
A quantum data erasure method, system and device, and a readable storage medium. The method includes: acquiring an equal-probability quantum state system; measuring the equal-probability quantum state system to collapse the equal-probability quantum state system into a binary random number sequence; generating a corresponding random angle value according to the binary random number sequence; and performing a bitwise rotation operation on quantum data in a quantum device according to the random angle value to complete this quantum data erasure. In the present application, the introduction of a quantum true random number can ensure that erased data will not be recovered and reversely cracked, and is of great value in protecting data assets; moreover, randomly processed data still has the characteristics such as quantum coherence and quantum entanglement, and can be used in subsequent operations, whereby a time-consuming labor-intensive process of preparing a quantum system is not required every time.
1. A quantum data erasure method, comprising:
acquiring an equal-probability quantum state system;
measuring the equal-probability quantum state system to collapse the equal-probability quantum state system into a binary random number sequence;
generating a corresponding random angle value according to the binary random number sequence, wherein the generating a corresponding random angle value according to the binary random number sequence comprises:
converting the binary random number sequence into a decimal random number sequence; and
generating the random angle value according to a preset accuracy and the decimal random number sequence; and
performing a bitwise rotation operation on quantum data in a quantum device according to the random angle value to complete this quantum data erasure.
2. The method according to claim 1 , wherein the acquiring an equal-probability quantum state system comprises:
generating the equal-probability quantum state system according to formula
H
n
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0
〉
=
1
2
n
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2
∑
x
∈
{
0
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n
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x
〉
,
where H n is a Hadamard matrix, is a standard quantum state, is an equal-probability quantum state, and n is the number of equal-probability quantum states in the equal-probability quantum state system.
3. The method according to claim 1 , wherein the generating a corresponding random angle value according to the binary random number sequence comprises:
generating a corresponding floating point number according to the binary random number sequence on the basis of a preset rule; and
determining the floating point number as the random angle value.
4. The method according to claim 1 , wherein after the generating a corresponding random angle value according to the binary random number sequence, the method further comprises:
determining position information of non-sensitive data in the quantum data according to an input data desensitization instruction; and
setting the random angle value corresponding to the position information to zero, and performing the bitwise rotation operation on the quantum data according to the random angle value to complete a quantum data desensitization.
5. A quantum data erasure apparatus, comprising:
a memory, configured to store a computer program; and
a processor, configured to implement, when executing the computer program, a quantum data erasure method comprising:
acquiring an equal-probability quantum state system;
measuring the equal-probability quantum state system to collapse the equal-probability quantum state system into a binary random number sequence;
generating a corresponding random angle value according to the binary random number sequence, wherein the generating a corresponding random angle value according to the binary random number sequence comprises:
converting the binary random number sequence into a decimal random number sequence; and
generating the random angle value according to a preset accuracy and the decimal random number sequence; and
performing a bitwise rotation operation on quantum data in a quantum device according to the random angle value to complete this quantum data erasure.
6. A non-transitory computer-readable storage medium, having a computer program stored thereon which, when executed by a processor, implements a quantum data erasure method comprising:
acquiring an equal-probability quantum state system;
measuring the equal-probability quantum state system to collapse the equal-probability quantum state system into a binary random number sequence;
generating a corresponding random angle value according to the binary random number sequence, wherein the generating a corresponding random angle value according to the binary random number sequence comprises:
converting the binary random number sequence into a decimal random number sequence; and
generating the random angle value according to a preset accuracy and the decimal random number sequence; and
performing a bitwise rotation operation on quantum data in a quantum device according to the random angle value to complete this quantum data erasure.
7. The method according to claim 1 , wherein the acquiring the equal-probability quantum state system is independent of a type of a quantum system, and is applicable to a light quantum system, a superconducting quantum system and a nuclear magnetic resonance quantum system.
8. The method according to claim 1 , wherein the binary random number sequence is a set of true random number sequences.
9. The method according to claim 1 , further comprising modifying the preset accuracy according to a modification command.
10. The method according to claim 1 , further comprising assuming the quantum data in the quantum device to be
D
0
=
[
α
1
…
α
i
…
α
n
β
1
…
β
i
…
β
n
]
,
a bitwise rotation operation is
R
(
θ
i
)
=
[
cos
θ
i
-
sin
θ
i
sin
θ
i
cos
θ
i
]
,
a rotation operation is performed on each bit of the quantum data with a corresponding Oi to obtain erased quantum data
D
1
=
R
·
D
0
=
[
α
1
′
…
α
i
′
…
α
n
′
β
1
′
…
β
i
′
…
β
n
′
]
,
wherein D0 is the quantum data in the quantum device, α and β are elements in a quantum data matrix respectively, R is a rotation operation matrix, D1 is quantum data after performing quantum data erasure, i is ith quantum data, and θi is a rotation angle of the ith quantum data.
11. The quantum data erasure apparatus according to claim 5 , wherein the acquiring an equal-probability quantum state system comprises:
generating the equal-probability quantum state system according to formula
H
n
❘
"\[LeftBracketingBar]"
0
〉
=
1
2
n
/
2
∑
x
∈
{
0
,
1
}
n
❘
"\[LeftBracketingBar]"
x
〉
,
where H n is a Hadamard matrix, is a standard quantum state, is an equal-probability quantum state, and n is the number of equal-probability quantum states in the equal-probability quantum state system.
12. The quantum data erasure apparatus according to claim 5 , wherein the generating a corresponding random angle value according to the binary random number sequence comprises:
generating a corresponding floating point number according to the binary random number sequence on the basis of a preset rule; and
determining the floating point number as the random angle value.
13. The quantum data erasure apparatus according to claim 5 , wherein after the generating a corresponding random angle value according to the binary random number sequence, the method further comprises:
determining position information of non-sensitive data in the quantum data according to an input data desensitization instruction; and
setting the random angle value corresponding to the position information to zero, and performing the bitwise rotation operation on the quantum data according to the random angle value to complete a quantum data desensitization.
14. The quantum data erasure apparatus according to claim 5 , the acquiring the equal-probability quantum state system is independent of a type of a quantum system, and is applicable to a light quantum system, a superconducting quantum system and a nuclear magnetic resonance quantum system.
15. The quantum data erasure apparatus according to claim 5 , wherein the binary random number sequence is a set of true random number sequences.
16. The quantum data erasure apparatus according to claim 5 , further comprising modifying the preset accuracy according to a modification command.
17. The quantum data erasure apparatus according to claim 5 , wherein the quantum data in the quantum device is assumed to be
D
0
=
[
α
1
…
α
i
…
α
n
β
1
…
β
i
…
β
n
]
,
a bitwise rotation operation is
R
(
θ
i
)
=
[
cos
θ
i
-
sin
θ
i
sin
θ
i
cos
θ
i
]
,
a rotation operation is performed on each bit of the quantum data with a corresponding θi to obtain erased quantum data
D
1
=
R
·
D
0
=
[
α
1
′
…
α
i
′
…
α
n
′
β
1
′
…
β
i
′
…
β
n
′
]
,
wherein D0 is the quantum data in the quantum device, α and β are elements in a quantum data matrix respectively, R is a rotation operation matrix, D1 is quantum data after performing quantum data erasure, i is ith quantum data, and θi is a rotation angle of the ith quantum data.
18. The non-transitory computer-readable storage medium according to claim 6 , wherein the acquiring an equal-probability quantum state system comprises:
generating the equal-probability quantum state system according to formula
H
n
❘
"\[LeftBracketingBar]"
0
〉
=
1
2
n
/
2
∑
x
∈
{
0
,
1
}
n
❘
"\[LeftBracketingBar]"
x
〉
,
where H n is a Hadamard matrix, is a standard quantum state, is an equal-probability quantum state, and n is the number of equal-probability quantum states in the equal-probability quantum state system.