The fourth amendment to the United States constitution, made applicable to the states through the fourteenth amendment, prohibits unreasonable searches and seizures by government agents. A warrantless search and seizure is per se unreasonable, subject to a few well-defined exceptions. Katz v. United States, 389 U.S. 347, 357, 88 S. Ct. 507, 19 L. Ed. 2d 576 (1967); State v. Miller, 227 Conn. 363, 383, 630 A.2d 1315 (1993); State v. Lewis, 220 Conn. 602, 609, 600 A.2d 1330 (1991). "The state bears the burden of proving that an exception to the warrant requirement applied. Mincey v. Arizona, 437 U.S. 385, 390-91, 98 S. Ct. 2408, 57 L. Ed. 2d 290 (1978); State v. Blades, 225 Conn. 609, 618, 626 A.2d 273 (1993)." State v. Eady, 249 Conn. 431, 436, 733 A.2d 112, cert. denied, U.S., 120 S. Ct. 551, 145 L. Ed. 2d 428 (1999). The defendant, however, bears the burden of proving that he has a constitutionally protected interest before the state must prove the constitutionality of its actions. State v. Joyce, 229 Conn. 10, 20, 639 A.2d 1007 (1994).