比特和量子比特的区别

1. 位：
它是单个信息单元，其值为 0 或 1(关或开、假或真、低或高)。

2. 量子位：
在量子计算中，量子位或量子位是量子信息的基本单位——经典二进制位的量子版本，用双态设备物理实现。量子位是一种二态量子力学系统，是最简单的量子系统之一，体现了量子力学的特殊性。

量子计算中位和量子位的区别：

S.NO	BITS	QUBITS
1.	The device computes by manipulating those bits with the help of logical gates (AND, OR, NOT).	The device computes by manipulating those bits with the help of quantum logic gates.
2.	A classical computer has a memory made up of bits where each bit hold either a one or zero.	A qubits (quantum bits) can hold a one, a zero or crucially a superposition of these.
3.	Bits are used in classical computers.	Qubits(Quantum bits) are use in quantum computer
4.	Information is stored in bits, which take the discrete values 0 and 1.	Information is stored in quantum bits, or qbits. A qbit can be in states labelled |0} and |1}, but it can also be in a superposition of these states, a|0} + b|1}, where a and b are complex numbers. If we think of the state of a qbit as a vector, then superposition of states is just vector addition.
5.	For example, if storing one number takes 64 bits, then storing N numbers takes N times 64 bits.	For example, for every extra qbit you get, you can store twice as many numbers. For example, with 3 qbits, you get coefficients for |000}, |001}, |010}, |011}, |100}, |101}, |110} and |111}.
6.	Bits are slow.	Qubits are faster.
7.	Its circuit behaviour based on classical physics.	Its circuit behaviour based on quantum mechanics.